& Abbreviation Guide - Aviation Today

AEROSPACE<br />

ACRONYM<br />

& <strong>Abbreviation</strong> <strong>Guide</strong><br />

3D, 4D three- or four-dimensional<br />

3G third generation<br />

4096 Code combinations of four-digit transponder<br />

code<br />

A<br />

A ampere(s)<br />

A autotuned navaid<br />

A-BPSK aviation binary phase shift keying<br />

A-QPSK aeronautical quadrature phase<br />

shift keying<br />

A-SMGCS advanced surface movement<br />

guidance and control systems<br />

A/B autobrake<br />

A/C aircraft<br />

A/D analog-to-digital<br />

A/G air/ground; air to ground<br />

A/L airline<br />

A/L autoland<br />

A/N alphanumeric<br />

A/P autopilot<br />

A/T autothrottle<br />

A&P airframe and power plant<br />

AAC aeronautical administration<br />

communications<br />

AAC airline administrative communications<br />

AAIB Air Accident Investigation<br />

Branch (U.K. equivalent of NTSB)<br />

AAF airway facilities service<br />

AAI Airline Avionics Institute<br />

AAIPT Aging Aircraft Enterprise Team<br />

AAIU air accident investigation unit<br />

AAL above aerodome level<br />

AALC autonomous approach landing<br />

capability<br />

AAMP advanced architecture microprocessor<br />

AAR Automated Aerial Refueling<br />

AATD <strong>Aviation</strong> Applied Technology<br />

Directorate (U.S. Army)<br />

AATT advanced air transportation<br />

technology<br />

AAS advanced automation system<br />

(FAA)<br />

ABC automatic brightness control<br />

AC advisory circular<br />

AC alternating current<br />

AC2 Dolby surround<br />

ACAA Air Carrier Association of America<br />

ACAC air-cooled air cooler<br />

ACAMS aircraft condition analysis management<br />

system<br />

ACARS aircraft communications<br />

addressing and reporting system<br />

ACAS airborne collision avoidance<br />

system<br />

ACC active clearance control<br />

ACC airspace control center<br />

ACC area control center<br />

ACD automatic conflict detection<br />

ACDO Air Carrier District Office<br />

ACE actuator control electronics<br />

ACE advanced certification equipment<br />

ACG Assessment Compliance Group<br />

ACIPS airfoil cowl ice protection system<br />

ACF area control facility<br />

ACK acknowledgment<br />

ACMF airplane condition monitoring<br />

function<br />

ACMP alternating current motor pump<br />

ACMS aircraft condition monitoring<br />

system<br />

ACNSS advanced communication/navigation/surveillance<br />

system<br />

ACP audio control panel<br />

ACS active control system<br />

ACS audio control system<br />

ACT active<br />

ACTC airport traffic control towers<br />

ACTD advanced concept technology<br />

demonstration<br />

ACU aircraft communications system<br />

ACU antenna control unit<br />

ACU apron control unit<br />

ACU autopilot control unit<br />

AD airworthiness directive (FAA)<br />

ADAHRS air data attitude heading reference<br />

system<br />

ADAS automated weather observing<br />

system data acquisition system<br />

ADB airport database<br />

ADC air data computer<br />

ADC Air Defense Command<br />

ADE application development engineer<br />

ADF automatic direction finding<br />

ADG air-driven generator<br />

ADI attitude director indicator<br />

ADIRS air data inertial reference system<br />

ADIRU air data inertial reference unit<br />

ADL aeronautical data link<br />

ADLP airborne data link protocol<br />

ADLP aircraft data link processor<br />

(Mode S)<br />

ADM air data module<br />

ADMS airline data management system<br />

ADN aircraft data network<br />

ADO airline dispatch office<br />

ADO airport district office<br />

ADP air driven pump<br />

ADR address<br />

ADR Advanced Data Research<br />

ADR alternative dispute resolution<br />

ADRAS airplane data recovery and<br />

analysis system<br />

ADS air data system<br />

ADS automatic dependent surveillance<br />

ADS-A automatic dependent<br />

surveillance-addressed<br />

ADS-A automatic dependent<br />

20 Avionics Magazine December 2008 www.avtoday.com/av

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surveillance-automation<br />

ADS-B automatic dependent<br />

surveillance-broadcast<br />

ADS-C ADS-contract<br />

ADS-R ADS-rebroadcast<br />

ADSEL address selective<br />

ADSP<br />

automatic dependent<br />

surveillance panel<br />

ADSSG ADS Study Group (ICAO)<br />

ADSU automatic dependent<br />

surveillance unit<br />

ADT air data tester<br />

AEA Aircraft Electronics Association<br />

AECU audio electronic control unit<br />

AED ALGOL extended for design<br />

AEEC formerly Airlines Electronic Engineering<br />

Committee (ARINC)<br />

AEP ARINC engineering practices<br />

AEP audio entertainment player<br />

AERA automated en route air traffic<br />

control<br />

AES aircraft earth station (Inmarsat)<br />

AESA active electronically scanned<br />

array<br />

AESS aircraft environment<br />

surveillance system<br />

AEW airborne early warning<br />

AEW&C Airborne Early Warning and Control<br />

AF airway facilities<br />

AFC Aeronautical Frequency<br />

Committee (AEEC)<br />

AFC automatic frequency compensation<br />

AFC automatic frequency control<br />

AFCAS automatic flight control augmentation<br />

system<br />

AFCS automatic flight control system<br />

AFD adaptive flight display<br />

AFD autopilot flight director<br />

AFDC autopilot flight director computer<br />

AFDS autopilot flight director system<br />

AFDX avionics full-duplex switched<br />

Ethernet<br />

AFEPS ACARS front-end processing<br />

system<br />

AFGCS automatic flight guidance and<br />

control system<br />

AFI authority format identifier<br />

AFIRS autonomous flight information<br />

collection and reporting system<br />

AFIS airborne flight information system<br />

AFIS automated flight inspection system<br />

AFM aircraft flight manual<br />

AFMS automatic flight management<br />

system<br />

AFN air traffic services facilities<br />

notification<br />

Raytheon Advanced Combat Radar, a retrofit AESA system, installed on F-16<br />

AFP Airspace Flow Program<br />

AFRL Air Force Research Lab<br />

AFS additional secondary factors<br />

AFS aeronautical fixed service (ICAO)<br />

AFS automatic flight system<br />

AFSK audio frequency shift keying<br />

AFSS automated flight service stations<br />

AFTN aeronautical fixed telecommunications<br />

network<br />

AFTRCC Aerospace and Flight Test Radio<br />

Coordinating Council<br />

AFU artificial feel unit<br />

AGACS automatic A/G communication<br />

system<br />

AGAE A/G applications engineering<br />

AGATE Advanced General <strong>Aviation</strong><br />

Transport Experiments (NASA)<br />

AGC automatic gain control<br />

AGCOS A/G communication services<br />

AGCS air-ground communication systems<br />

AGCU auxiliary generator control unit<br />

AGD ADS-B guidance display<br />

AGDL A/G data link<br />

AGIS A/G intermediate system<br />

AGL above ground level<br />

AGR A/G router<br />

AGRM air/ground router-regional manager<br />

AGS A/G system<br />

AGSS ACARS ground system standard<br />

(AEEC)<br />

AGTS A/G test station<br />

AGVS A/G voice sub-network<br />

AGW ARTS gateway<br />

AHC attitude heading computer<br />

AHMS aircraft health monitoring system<br />

AHRS attitude heading reference system<br />

AI alternative interrogator<br />

AI application interface<br />

AI area incursion<br />

AIA Aerospace Industries Association<br />

AIAA American Institute of Aeronautics<br />

and Astronautics<br />

AIC aeronautical information circular<br />

AIDC air traffic services interfacility<br />

data communications<br />

AIDS aircraft/airborne integrated data<br />

system<br />

AIED aeronautical industry engineering<br />

and development<br />

AIEM Airlines International Electronic<br />

Meeting (AMC)<br />

AIFSS automated international flight<br />

service stations<br />

AIL aileron<br />

AIM airman’s information manual<br />

AIMS airplane information management<br />

system (Boeing 777)<br />

AIMS airport information management<br />

system<br />

AINSC aeronautical industry service<br />

communication<br />

AIO analog input/output<br />

AIP aeronautical information publication<br />

AIP Airport Improvement Program<br />

AIP analog input<br />

AIRAC aeronautical information regulation<br />

and control<br />

AIRCOM digital air/ground communications<br />

service (SITA)<br />

AIRE Atlantic Interoperability Initiative<br />

to Reduce Emissions (FAA)<br />

AIRMET airman’s meteorological information<br />

AIRO analog input/reference output<br />

AIS aeronautical information service<br />

AIS automatic information services<br />

(Eurocontrol)<br />

AISG Applications Interface Sub-Group<br />

(IATA)<br />

AIV accumulator isolation valve<br />

AJPS AFEPS journal processing system<br />

AKO Army Knowledge Online<br />

ALC airline link control<br />

ALC asynchronous link control<br />

www.avtoday.com/av December 2008 Avionics Magazine 21

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Aerospace Acronym <strong>Guide</strong> •••<br />

ALC automatic level control<br />

ALMDS airborne laser mine detection<br />

system<br />

ALPA Air Line Pilots Association<br />

ALPS automatic line protection service<br />

ALS application layer structure<br />

ALT airborne link terminal<br />

ALT altitude/alternate<br />

ALT-HOLD altitude hold mode<br />

ALTM altimeter<br />

ALTN alternate<br />

ALTRV altitude reservation<br />

ALTS altitude select<br />

ALU arithmetic and logic unit<br />

AM access module<br />

AM amplitude modulation<br />

AMASS airport movement area safety<br />

system<br />

AMC advanced mezzanine card<br />

AMC Air Mobility Command<br />

AMC auxiliary maintenance computer<br />

AMC Avionics Maintenance Conference<br />

AMCP aeronautical mobile communications<br />

panel<br />

AMD advisory map display<br />

AME amplitude modulation equivalent<br />

AMF Airborne, Maritime and Fixed Station<br />

AMF-M AMF-Maritime<br />

AMF-SA AMF-Small Airborne<br />

AMF JTRS Airborne and Maritime/Fixed Station<br />

Joint Tactical Radio System<br />

AMI airline modifiable information<br />

AMLCD active matrix liquid crystal display<br />

AMIS aircraft management information<br />

system<br />

AMOSS airline maintenance and operation<br />

support system<br />

AMP audio management panel<br />

AMP Avionics Modernization Program<br />

AMPL amplifier<br />

AMRAAM Advanced Medium-Range Air to<br />

Air Missile<br />

AMS acquisition management system<br />

AMS apron management service<br />

AMS ARINC maintenance service<br />

AMS avionics management service<br />

AMS(R)S aeronautical mobile satellite<br />

(route) service<br />

AMSS aeronautical mobile satellite service<br />

AMTOSS aircraft maintenance task oriented<br />

support system<br />

AMTS aeronautical message transfer<br />

service<br />

AMU ACARS/avionics management<br />

unit<br />

AMU audio management unit<br />

AMUX audio multiplexer<br />

ANC Air Navigation Commission (ICAO)<br />

ANDC airport and navigation data compiler<br />

ANFR Agence Nationale des Frequences<br />

(France)<br />

ANFS aircraft network and file server<br />

ANICS Alaskan NAS Interfacility<br />

Communication<br />

ANLP ARINC network layer protocol<br />

ANP actual navigation performance<br />

ANP air navigation plan/performance<br />

ANPA advanced notice of proposed<br />

amendment<br />

ANR active noise reduction<br />

ANS air navigation system<br />

ANS ambient noise sensor<br />

ANSI American National Standards<br />

Institute<br />

ANSIR advanced navigation system inertial<br />

reference<br />

ANSP air navigation service provider<br />

ANSU avionics network server unit<br />

ANTC advanced networking test center<br />

AO acronymic obfuscation<br />

AOA ACARS over AVLC<br />

AOA angle of arrival<br />

AOA angle of attack<br />

AOAS advanced oceanic automation<br />

system<br />

AOC aeronautical operational control<br />

AOC aircraft operational control<br />

AOC Airline Operational Control Center<br />

AOC airline operations center<br />

AOC airport obstruction chart<br />

AOC airport operational communications<br />

AOCC airline operations control center<br />

AODB airport operational database<br />

AODC age of data, clock (GPS)<br />

AODE age of data, ephemeris (GPS)<br />

AOG aircraft on ground<br />

AOHE air/oil heat exchanger<br />

AOM aircraft operating manual<br />

AOP aeronautical OSI profile<br />

AOP airline operational procedure<br />

AOP analog output<br />

AOPA Aircraft Owners and Pilots Association<br />

AOR Atlantic Ocean region<br />

AOR area of responsibility<br />

AOR-E Atlantic Ocean region-east<br />

AOR-W Atlantic Ocean region-west<br />

AP airport location (ACARS/AFEPS)<br />

APA Allied Pilots Association<br />

APA autopilot amplifier<br />

APANPIRG Asia/PAC Air Navigation Planning<br />

& Implementation Regional Group<br />

APAS Active/Passive Aircraft Survivability<br />

APB acquisition program baseline<br />

APB auxiliary power breaker<br />

APC aeronautical passenger<br />

communication<br />

APC aeronautical public correspondence<br />

APC autopilot computer<br />

APCO Association of Public Safety<br />

Communications Officials<br />

APFA Association of Professional Flight<br />

Attendants<br />

APFDS autopilot flight director system<br />

APEX application/executive software<br />

API application programming interface<br />

APIM ARINC Industry Activities Project<br />

Initiation/Modification<br />

APIRS attitude and positioning inertial<br />

reference system<br />

APMS automated performance<br />

measurement system<br />

APL Applied Physics Laboratory<br />

APLC airport performance laptop<br />

computers<br />

APM approach path monitor<br />

APN ARINC packet network<br />

APP approach control<br />

APPR approach<br />

APR actual performance reserve<br />

APRL ATN profile requirement list<br />

APU auxiliary power unit<br />

APUC auxiliary power unit controller<br />

APX application/executive software<br />

AQF avionics qualification facility<br />

AQP avionics qualification procedure/<br />

program<br />

AQP advanced qualification program<br />

AQS advanced quality system<br />

ARB arbitrary waveform generator<br />

ARC aviation rulemaking committee<br />

(FAA)<br />

ARD advanced requirement definition<br />

ARDEP analysis of research & development<br />

in Eurocontrol programs<br />

ARF airline risk factor<br />

ARM area regional manager<br />

ARMC area regional maintenance center<br />

ARP air data reference panel<br />

ARTAS ATM surveillance tracker and<br />

server<br />

ASAS aircraft separation assurance<br />

system (AEEC)<br />

ASAS aviation safety analysis system<br />

ASC aircraft system controller<br />

ASC aural synthesizer card<br />

ASCII American standard code for<br />

information interchange<br />

ASCB avionics standard communication<br />

bus<br />

ASCPC air supply and cabin pressure<br />

controllers<br />

ASCS air supply control system<br />

ASCU anti-skid control unit<br />

ASD aircraft situation display<br />

ASDAR aircraft-to-satellite data relay<br />

ASDB aircraft specific database<br />

ASDE airport surface detection equipment<br />

ASDE-X airport surface detection<br />

equipment, model X<br />

ASDI Aircraft Situation Display to Industry<br />

ASDL aeronautical satellite data link<br />

ASDR airport surface detection radar<br />

ASE altimetry system error<br />

ASECNA Agency for Security of Aerial Navigation<br />

in Africa and Madagascar<br />

ASG ARINC signal gateway<br />

22 Avionics Magazine December 2008 www.avtoday.com/av

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••• Aerospace Acronym <strong>Guide</strong><br />

ASI airspeed indicator<br />

ASI avionics system integration<br />

ASIAS <strong>Aviation</strong> Safety Information<br />

Analysis and Sharing (FAA)<br />

ASIC application specific integrated<br />

circuit<br />

ASL above sea level<br />

ASM airspace management<br />

ASM autothrottle servo motor<br />

ASME American Society of Mechanical<br />

Engineers<br />

ASOR Allocating Safety Objectives<br />

and Requirements<br />

ASOS automated surface observation<br />

system<br />

ASP ACARS sub-network protocol<br />

ASP acquisition strategy paper<br />

ASP aeronautical fixed service systems<br />

planning (AFS)<br />

ASP altitude set panel<br />

ASP arrival sequencing program<br />

ASPP application specific programmable<br />

processor<br />

ASR airport surveillance radar<br />

ASRAAM advanced short range air-toair<br />

missile<br />

ASRS aviation safety reporting system<br />

ASSTC aerospace simulation and systems<br />

test center<br />

ASSV alternate source selection valve<br />

ASTA airport surface traffic automation<br />

ASTAMIDS Airborne Standoff Minefield<br />

Detection System<br />

ASTERIX All-Purpose Structured Eurocontrol<br />

Surveillance Information<br />

Exchange<br />

ASTF airspace system task force<br />

ASTM American Society for Testing<br />

and Materials<br />

ASTOR Airborne Stand-Off Radar (U.K.)<br />

ASVI avionics serial video interface<br />

ASV alternate servo valve<br />

AT air transport<br />

AT at an altitude<br />

ATA actual time of arrival<br />

ATA Air Transport Association<br />

ATAS aviation traffic and application<br />

software<br />

ATC advanced technology center<br />

ATC air traffic control<br />

ATCA Air Traffic Control Association<br />

ATCBI ATC beacon interrogator<br />

ATCC area and terminal control center<br />

ATCRBS ATC radar beacon system<br />

ATCSS ATC signaling system<br />

ATCT air traffic control tower<br />

ATIS airport traffic information system<br />

ATIS automated terminal information<br />

service<br />

ATIS-B automatic terminal information<br />

service-broadcast<br />

ATDL air transport data link<br />

ATE automatic test equipment<br />

ATE avionics test and evaluation<br />

ATFM air traffic flow management<br />

ATG advanced concept technology<br />

demonstration<br />

ATHR autothrust system<br />

ATSRAC Aging Transport Systems Rulemaking<br />

Advisory Committee<br />

ATI airborne tracker illuminator<br />

ATIDS airport surface target identification<br />

system/service<br />

ATIS airport traffic information system<br />

ATIS automatic terminal information<br />

service<br />

ATL autothrottle limit<br />

ATLAS abbreviated test language for<br />

avionics systems<br />

ATM air traffic management<br />

ATM asynchronous transfer mode<br />

ATMAC Air Traffic Management<br />

Committee (RTCA)<br />

ATMAS ATM automation system<br />

ATMB Air Traffic Management Bureau<br />

ATM DSS ATM decision support service<br />

ATMS area navigation, test and management<br />

services<br />

ATN aeronautical telecommunication<br />

network<br />

XXXXX_Goodrich_EFB_Avionics_Jul08_120x178:24324_EFB_ATE_&_M_126x186 5/6/08 17:42 Page 1<br />

Chart to right is © Jeppesen Sanderson, Inc. 2008. Chart shown is for illustration<br />

purposes and not to be used for navigation.<br />

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www.avtoday.com/av December 2008 Avionics Magazine 23

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Aerospace Acronym <strong>Guide</strong> •••<br />

ATNE ATN engineering<br />

ATNP ATN panel<br />

ATO air traffic operations<br />

ATO Air Traffic Organization (FAA)<br />

ATOL automatic take-off and landing<br />

ATOP advanced technologies and oceanic<br />

procedures<br />

ATP acceptance test procedure/plan<br />

ATPAC Air Traffic Procedures Advisory<br />

Committee (FAA)<br />

ATR acceptance test report<br />

ATR air transport racking<br />

ATR air transport radio: ARINC formfactor/standard<br />

case dimensions<br />

ATS air traffic services<br />

ATS air turbine starter<br />

ATS autothrottle system<br />

ATSAW Airborne Traffic Situational<br />

Awareness<br />

ATSC air traffic services communication<br />

AT/SC autothrottle/speed control<br />

Teledyne AWLU<br />

ATSGF air traffic services geographic<br />

filter<br />

ATSMP air traffic services message processor<br />

ATSO air traffic services organization<br />

ATSP air traffic services provider<br />

ATSRAC Aging Transport Systems Rulemaking<br />

Advisory Committee (FAA)<br />

ATSU air traffic services unit<br />

ATWR apron tower (and operator)<br />

AUSRIRE All Union Scientific Research<br />

Institute of Radio Equipment: CIS<br />

(former Soviet) agency<br />

AUX auxiliary<br />

AVC aviation VHF car rental availability<br />

(messages)<br />

AVH aviation VHF hotel availability<br />

(messages)<br />

AVLAN avionics local area network<br />

AVLC aviation VHF link control<br />

AVM airborne vibration monitor<br />

AVN avionics<br />

AVOD audio and video channels on<br />

demand<br />

AVOL aerodrome visibility operational<br />

level<br />

AVPAC aviation VHF packet<br />

communications<br />

AVS aviation VHF seat availability<br />

(messages)<br />

AWACS airborne warning and control system<br />

AWAS automated weather advisory station<br />

AWG American wire gauge<br />

AWIN advanced weather information<br />

system<br />

AWIN aviation weather information<br />

AWIPS advanced weather interactive<br />

processing system<br />

AWLU aircraft wireless LAN unit<br />

AWM auto warning mixer<br />

AWO all weather operations<br />

AWOP AWO panel<br />

AWOS automated/airport weather<br />

observing system<br />

AWR aviation weather research<br />

AZ azimuth: angular measurement in<br />

horizontal plane<br />

B<br />

B-NAV basic area navigation<br />

BAMS Broad Area Maritime Surveillance<br />

BBML broadband multi-link<br />

BDA bomb damage assessment<br />

BDMIS business data management and<br />

invoicing system<br />

BDS comm-B designation subfield<br />

BEA Bureau d’Enquetes Accidents<br />

(French equivalent of NTSB)<br />

BEP back-end processor<br />

BEPMS BEP management system<br />

BER bit error rate<br />

BFE buyer furnished equipment<br />

BFO beat frequency oscillator<br />

BFT Blue Force Tracking<br />

BGARS basic general aviation research<br />

simulator<br />

BGI bus grant inhibit<br />

BGP border gateway protocol<br />

BI burn-in<br />

Bi-SC Bi-Strategic Command<br />

BiG bilingual ground station (ACARS<br />

and VDL Mode 2)<br />

BIS boundary intermediate system<br />

BISMS BIS management system<br />

BIST built-in self-test<br />

BiSync binary synchronous control<br />

BIT built-in test<br />

Bit a binary digit<br />

BITE built-in test equipment<br />

BIU bus interface unit<br />

BLK block/black<br />

BMV brake metering valve<br />

BNR binary<br />

BNS boundary notification system<br />

(squitters)<br />

BOC binary offset carrier<br />

BOC bottom of climb<br />

BOP/COP bit-oriented protocol/characteroriented<br />

protocol<br />

BP bite processor<br />

BPCU bus power control unit<br />

BPL broadband over powerlines<br />

BPS bits per second<br />

BPSK binary phase shift keying<br />

BR bridge<br />

BRG bearing<br />

BRI basic rate interface<br />

BRNAV basic area navigation<br />

BRT brightness<br />

BSN backbone sub-network<br />

BSC binary synchronous communication<br />

BSCU brake system control unit<br />

BSP board support package<br />

BSU beam steering unit<br />

BSU bypass switch unit<br />

BTB bus tie breaker<br />

BTMU brake temperature monitor unit<br />

BU backup<br />

BUEC BU emergency communications<br />

BUFR binary universal form for communication<br />

representation<br />

BWAN BU wide area network<br />

Byte a grouping of eight bits<br />

C<br />

C2 command and control<br />

C41 command, control, communications,<br />

computers & intelligence<br />

C4ISR command, control, communications,<br />

computers, intelligence,<br />

surveillance and reconnaissance<br />

C-MANPADS Counter-Man Portable Air Defense<br />

System<br />

C/A code course acquisition code<br />

(GPS)<br />

C/NO carrier-to-noise density ratio<br />

C/R command/response<br />

C/SOIT communications/surveillance<br />

operational implementation team<br />

C/UT code/unit test<br />

C&C command and control (also C2)<br />

C&W control and warning<br />

CA conflict alert<br />

CAA Civil <strong>Aviation</strong> Administration<br />

CAA Civil <strong>Aviation</strong> Authority<br />

CAAC Civil <strong>Aviation</strong> Administration of<br />

China<br />

CAAFI Commercial <strong>Aviation</strong> Alternative<br />

Fuels Initiative (FAA)<br />

CAAS common avionics architecture<br />

system<br />

CAASD Center for Advanced <strong>Aviation</strong><br />

System Development (MITRE<br />

Corp.)<br />

CAB Civil Aeronautics Board<br />

CAC caution advisory computer<br />

CACP cabin area control panel<br />

CAD computer-aided design<br />

CADAG Communications, Automation and<br />

Data Link Applications Group<br />

CADC central air data computer (an<br />

24 Avionics Magazine December 2008 www.avtoday.com/av

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••• Aerospace Acronym <strong>Guide</strong><br />

analog system)<br />

CADS centralized automatic dependent<br />

surveillance<br />

CAE component application engineer<br />

CAGE commercial avionics GPS engine<br />

CAH cabin attendant handsets<br />

CAI caution annunciator indicator<br />

CALSEL variation of SELCAL system<br />

CAM computer-aided manufacturing<br />

CAN controller area network<br />

CANbus control area network<br />

CANSO Civil Air Navigation Services<br />

Organization<br />

CAOC Combined Air Operations Center<br />

CAP Civil Air Patrol (U.S.)<br />

CAPA Coalition of Airline Pilots Association<br />

CAPS commercial airliner protection<br />

system<br />

CARE cooperative actions on R&D in<br />

Eurocontrol<br />

CAS collision avoidance system<br />

CAS commercially available software<br />

CAS computed airspeed<br />

CASA controller automated spacing aid<br />

CASCADE Co-operative ATS (Air Traffic<br />

Services) through Surveillance<br />

and Communication Applications<br />

Deployed in ECAC (European Civil<br />

<strong>Aviation</strong> Conference)<br />

CASE computer-aided software<br />

engineering<br />

CASR Civil <strong>Aviation</strong> Safety Regulations<br />

CASS Consolidated Automated Support<br />

System<br />

CAT categories (I, II, IIIa/b/c) approach<br />

CAT clear air turbulence<br />

CAT computer aided testing<br />

CAVS CDTI assisted visual separation<br />

CBA cost/benefit analysis<br />

CBT computer-based training<br />

CC connection confirm<br />

CCA circuit card assembly<br />

CCB configuration control board<br />

CCB converter circuit breaker<br />

CCD category class diagram<br />

CCD charged coupled device<br />

CCD coherent change detection<br />

CCD cursor control device<br />

CCIR International Radio Consultative<br />

Committee<br />

CCITT Consultative Committee International<br />

Telephone and Telegraph<br />

CCP consolidated control panel<br />

CCS cabin communication system<br />

CCS common core system<br />

CCTV closed-circuit television<br />

CD carrier detect<br />

CD chrominance difference<br />

CDA continuous descent approach<br />

CDA coordinating design authority<br />

CDAM centralized data acquisition module<br />

CDAM common data acquisition module<br />

CDG configuration database generator<br />

CDI course deviation indicator<br />

CDM collaborative decision-making<br />

CDMS CDM system<br />

CDMS control and data management<br />

system<br />

CDP continuous data program<br />

CDR critical design review<br />

CDS central dispatch system<br />

CDS cockpit display systems<br />

TechSAT<br />

Avionics Bus Interface Family<br />

TechSAT North America<br />

Lake Washington Air Harbor • Hangar Three<br />

3849 N.E. 98th Street • Seattle WA 98115 • USA<br />

Tel +1 (206) 910-3908<br />

north.america@techsat.com<br />

CDS common display system<br />

CDSS cockpit door surveillance system<br />

CDT controlled departure time<br />

CDTI cockpit display of traffic information<br />

CDU control display unit<br />

CDV compressed digital video<br />

CEC cooperative engagement capability<br />

CEI cabin equipment interfaces<br />

CENTCOM U.S. Central Command<br />

CENTRIXS Combined Enterprise Regional<br />

Exchange System<br />

ARINC 664/AFDX® – ARINC 429 – MIL-STD-1553<br />

Powerful on-board protocol engines<br />

Consistent features and interfaces<br />

Comprehensive error injection/detection capabilities<br />

Integration on PCI, cPCI, PXI, PCIe, and VME platforms<br />

Driver and API support for Windows, Linux, or VxWorks<br />

Bus analyzer software and support for many TechSAT<br />

avionics simulations: CMS/CMC/CMCF, CIDS, IFE, RDC<br />

www.techsat.com<br />

Test & Integration Systems Products<br />

Software Solutions Service & Support<br />

TechSAT GmbH<br />

Technical Systems for Avionics and Test<br />

Gruber Strasse 46c • 85586 Poing • Germany<br />

Tel +49 (8121) 703-0 • Fax +49 (8121) 703-177<br />

ts-info@techsat.com<br />

www.avtoday.com/av December 2008 Avionics Magazine 25<br />

TechSAT_Avionics 12_08_hmg.indd 1 04.11.2008 17:23:46

---

Aerospace Acronym <strong>Guide</strong> •••<br />

CEP circular error probable<br />

CF change field<br />

CFDIU centralized fault display interface<br />

unit<br />

CFDS central fault display system<br />

CFDU configurable file data unit<br />

CFIT controlled flight into terrain<br />

CFM cubic feet per minute<br />

CFM configuration management<br />

CFMU central flow management unit<br />

CFS cabin file server<br />

CG center of gravity<br />

CHAIN Compartmented High Assurance<br />

Information Network<br />

CHI computer/human interface<br />

CHIS center hydraulic isolation system<br />

CI configuration item<br />

CI cabin interphone<br />

CID category interaction diagram<br />

CIDIN common ICAO data interchange<br />

network<br />

CIDS cabin interphone distribution<br />

system<br />

CIE Commission Internationale de<br />

I‘Eclairage<br />

CIGS copper-indium-gallium-diselenide<br />

CIP capital investment plan<br />

CIP convergence & implementation<br />

program (Eurocontrol)<br />

CIS common information services<br />

CIS corporate information system<br />

CLNP connectionless network protocol<br />

CLNS connectionless network service<br />

CLTP connectionless mode transport<br />

protocol<br />

CM context/configuration management<br />

CMC central maintenance computer<br />

CMCF CMC function<br />

CMCS CMC system<br />

CMD command<br />

CMF common message format<br />

CMGT contract management<br />

CMM capability maturity model<br />

CMM common mode monitor<br />

CMM component maintenance manual<br />

CMN control motion noise<br />

CMOS complementary metal oxide<br />

semiconductor<br />

CMP configuration management plan<br />

CMS cabin management system<br />

CMU communication management unit<br />

CND can not duplicate<br />

CNDB customized navigation database<br />

CNES Centre National d’Etudes Spatiales<br />

(France)<br />

CNI communications, navigation and<br />

identification<br />

CNP com/nav/pulse<br />

CNR customer notification reports<br />

CNS communication, navigation<br />

surveillance<br />

CNS/ATM communications, navigation, surveillance/air<br />

traffic management<br />

CNSI com/nav/surveillance/identification<br />

CNUS cabin network server unit<br />

COA certificate of authorization<br />

CODEC coder/decoder<br />

COM cockpit operating manual<br />

COMINT communications intelligence<br />

COMINT/DF COMINT direction finding<br />

COMM communications<br />

COM/MET/OPS communications/meteorological/<br />

operations<br />

CON continuous<br />

COMSAT Communications Satellite Corp.<br />

CONOPS concept of operations<br />

CONUS continental United States<br />

COP character-oriented protocol<br />

COTP connection-oriented transport<br />

protocol<br />

COTR contracting officer’s technical<br />

representative<br />

COTS commercial-off-the-shelf<br />

CP central processor<br />

CP conflict probe<br />

CP control panel<br />

CPA closest point of approach<br />

CPA Coalition of Airline Pilots Associations<br />

CPA collision prediction and alerting<br />

Rockwell Collins CMU-900<br />

CPC cabin pressure controller<br />

CPC controller-pilot communications<br />

CPC cursor position control<br />

CPCI computer program configuration<br />

item<br />

CPCS cabin pressure control system<br />

CPDLC controller-pilot data link communications<br />

CPE circular position error<br />

CPI continuous process improvement<br />

CPM core processing module<br />

CPM critical path method<br />

CPS cabin pressure sensor<br />

CPS central processing system<br />

CPU central processing unit<br />

CR change of request<br />

CR connection request<br />

CR contrast ratio<br />

CRA conflict resolution advisory<br />

CRAF Civil Reserve Air Fleet<br />

CRC cyclic redundancy checking/code<br />

CRD current routing domain<br />

CRADA cooperative research and development<br />

agreement<br />

CRM crew/cockpit resource management<br />

CRPA controlled reception pattern<br />

antenna<br />

CRS Congressional Research Service<br />

(U.S.)<br />

CRISD computer resources integrated<br />

support document<br />

CRISTAL CoopeRative Validation of Surveillance<br />

Techniques and Applications<br />

(Eurocontrol)<br />

CRM collision risk model<br />

CRM crew resource management<br />

CRMA code reuse multiple access<br />

CRR cutover readiness review<br />

CRS course<br />

CRT cathode ray tube<br />

CRZ cruise<br />

CS commercial service<br />

CS common service<br />

CSC cargo system controller<br />

CSC common signaling channel<br />

CSC computer software component<br />

CSCI computer software configuration<br />

item<br />

CSF command/status frame<br />

CsLEOS BAE Systems real-time operating<br />

system<br />

CSMA carrier sense multiple access<br />

CSMA/CD carrier sense multiple access<br />

with collision detection<br />

CSCP cabin system control panel<br />

CSDB commercial standard data bus<br />

CSDS cargo smoke detector system<br />

CSEU control systems electronics unit<br />

CSMM crash survivable memory modules<br />

CSMU cabin system management unit<br />

CSP Common Sensor Payload<br />

CSPA closely spaced parallel approach<br />

CSS cabin systems subcommittee<br />

CSTAC Commercial Space Transportation<br />

Advisory Committee (FAA)<br />

CSU channel service unit<br />

CSU computer software unit<br />

CSU configuration strapping unit<br />

CTA control area<br />

CTA controlled time of arrival<br />

CTAF common traffic advisory frequency<br />

CTAI cowl thermal anti-icing<br />

CTAS center TRACON automation system<br />

CTC cabin temperature controller<br />

CTD cabin training device<br />

CTL control<br />

CTMO centralized air traffic flow management<br />

organization<br />

CTOL conventional takeoff and landing<br />

CTR center<br />

CTR control zone<br />

CTRD configuration test requirements<br />

document<br />

CTRL control<br />

CTS clear to send<br />

CTS conformance test suite<br />

CTS/TCTS combat training system/tactical<br />

combat training system<br />

CTU cabin telecommunications unit<br />

CU channel utilization<br />

26 Avionics Magazine December 2008 www.avtoday.com/av

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••• Aerospace Acronym <strong>Guide</strong><br />

CU combiner unit (HUD)<br />

CU control unit<br />

CUG closed user group<br />

CUTE common use terminal equipment<br />

CV/DFDR cockpit voice and digital flight<br />

data recorder<br />

CVR cockpit voice recorder<br />

CVRCP cockpit voice recorder control<br />

panel<br />

CW clockwise<br />

CW continuous wave<br />

CWI continuous wave interference<br />

CWID Coalition Warrior Interoperability<br />

Demonstration<br />

CWP central weather processor<br />

CWP controller/ed working position<br />

CWS control wheel steering<br />

D<br />

D8PSK differential 8-phase-shift keying<br />

D-ATIS digital automatic terminal<br />

information service<br />

D-OTIS data link operational terminal<br />

service<br />

D-TAXI data link taxi clearance delivery<br />

D-TOC digital transfer of communications<br />

DA descent advisor<br />

DA design authority<br />

DA digital-to-analog<br />

DABS discrete addressable beacon system<br />

DAC digital-to-analog converters<br />

DADC digital air data computer<br />

DADS digital air data system<br />

DAISS digital airborne intercommunication<br />

switching system<br />

DAP digital service access product<br />

DAP direct action penetration<br />

DAP downlink aircraft parameter<br />

DAP download of aircraft parameter<br />

DAR data access recorder<br />

DARC direct access radar channel<br />

DARP dynamic aircraft route planning<br />

DARPA Defense Advanced Research<br />

Projects Agency (U.S.)<br />

DAS designated alteration station<br />

DAS digital audio subcommittee<br />

DAS distributed aperture system<br />

DASS defensive aids sub-system<br />

DB database<br />

dB decibel<br />

dBA dB adjusted<br />

DBI downlink block identifier<br />

dBI dB referenced to an isotropic<br />

antenna<br />

dBI decibels above isotopic circular<br />

dBM dB below 1 milliwatt<br />

DBS direct broadcast satellite<br />

DBU database unit<br />

DBU dial backup<br />

dBW dB-watts or referenced to 1 watt<br />

DC direct current<br />

DC disconnect confirm<br />

DCAS digital control audio system<br />

DCD double channel duplex<br />

DCE data communications equipment<br />

DCGF data conversion gateway function<br />

DCL departure clearance (European)<br />

DCM digital coherent mute<br />

DCMF data communication<br />

management function<br />

DCMS data communication<br />

management system<br />

DCN document/drawing/design<br />

change notice<br />

DCP data communication process<br />

DCP display control panel<br />

DCS double channel simplex<br />

DCU data concentration unit<br />

DCV directional control valve<br />

DD data delivery<br />

DDA digital differential analyzer<br />

DDD dual disk drive<br />

DDM difference in depth of modulation<br />

DDP declarations of design and<br />

performance<br />

DDR draft document review<br />

DDR double data rate<br />

DDRMI digital distance radio magnetic<br />

indicator<br />

DDS direct digital synthesizer<br />

DDT downlink data transfer<br />

DER designated engineering<br />

representative<br />

DERA Defense Research and Evaluation<br />

Agency (U.K.)<br />

DEU display electronics unit<br />

DF direction finding<br />

DFA direction finding antenna<br />

DFCS digital flight control system<br />

DFDAF digital flight data acquisition<br />

function<br />

DFDAMU digital flight data acquisition<br />

management unit<br />

DFDAU digital flight data acquisition unit<br />

DFDR digital flight data recorder<br />

DFDU digital flight data unit<br />

DFGC digital flight guidance computer<br />

DFGS digital flight guidance system<br />

DFIDU dual function interactive display<br />

unit<br />

DFIU digital flight instrument unit<br />

DFS Deutsche Flugsicherung GmbH<br />

(Germany)<br />

DFS digital frequency select<br />

DfT Department for Transport (U.K.)<br />

DFU digital function unit<br />

DG directional gyro<br />

DGNSS differential global navigation satellite<br />

system<br />

DGPS differential global positioning<br />

system<br />

DH decision height<br />

DHCP dynamic host configuration protocol<br />

DHS Department of Homeland Security<br />

DI data interrupt<br />

DIFAX digital facsimile<br />

DIGNU deeply integrated guidance and<br />

navigation unit<br />

DIP data interrupt program<br />

DIP dual in-line package<br />

DIR director<br />

DIRCM direct infrared countermeasures<br />

DIR/INTC direct intercept<br />

DISA Defense Information Systems<br />

Agency (U.S.)<br />

DISC disconnect<br />

DISCH discharge<br />

DIST distance<br />

DITS data information transfer system<br />

DL data link<br />

DLAP data link application processor<br />

DLC data link control<br />

DLCI data link control identifier<br />

DLE data link entity<br />

DLK data link (AEEC)<br />

DLL data link layer<br />

DLM data link management unit<br />

DLME data link and message engineering<br />

DL/MSU data loader/mass storage unit<br />

DLNA diplexer/low-noise amplifier<br />

DLORT data link operational requirements<br />

team<br />

DLP data link processor<br />

DLS data link service/system<br />

DLU download unit<br />

DM disconnected mode<br />

DMA direct memory access<br />

DMD digital memory device<br />

DME distance measuring equipment<br />

DME/N DME normal<br />

DME/P DME precision<br />

DMM data memory module<br />

DMS data link management system<br />

DMS debris monitoring sensor<br />

DMU data management unit<br />

DoD Department of Defense (U.S.)<br />

DoT Department of Transportation<br />

(U.S.)<br />

DOTS dynamic ocean tracking system<br />

DPI dots per inch<br />

DPR dual port RAM<br />

DPSK differential phase shift keying<br />

DR dead reckoning<br />

DR deduced reckoning<br />

DRAM dynamic random access memory<br />

DRER designated radio engineering<br />

representative (FAA)<br />

DRN document release notice<br />

DRVSM domestic reduced vertical<br />

separation minimum<br />

DSAD digital service access device<br />

DSARC defense system acquisition<br />

review cycle<br />

DSB double side band<br />

DSB-AM DSB-amplitude modulation<br />

DSDU data signal display unit<br />

www.avtoday.com/av December 2008 Avionics Magazine 27

---

Aerospace Acronym <strong>Guide</strong> •••<br />

DSF display system function<br />

DSP data link service provider<br />

DSP departure sequencing program<br />

DSP digital signal processor<br />

DSP display select panel<br />

DSP domain specific part<br />

DSPDRV display driver<br />

DSR display system replacement<br />

DSS decision support services<br />

DSU data signaling unit<br />

DT&E development test and evaluation<br />

DTD data terminal display<br />

DTD document type definition<br />

DTE data terminal equipment<br />

DTED digital terrain evaluation data<br />

DTG distance-to-go<br />

DTM demonstration test milestone<br />

DTMF dual tone multifrequency<br />

(telephone)<br />

DTP distributed targeting processor<br />

DTPDU data protocol data unit<br />

DTRS data transceiver router server<br />

DTS digital theatre systems<br />

DTU data transfer unit<br />

DU display unit<br />

DUAT direct user access terminal<br />

DUATS direct user access terminal system<br />

DUST dual-use science and technology<br />

DVF demonstration and validation<br />

facility<br />

DVM digital voltmeter<br />

DVMC digital video map computer<br />

DVOR Doppler very high frequency<br />

omnidirectional range<br />

DVRS digital voice recorder system<br />

DWAN direct WAN<br />

E<br />

E-PIREPS electronic pilot reports<br />

E/D end-of-descent<br />

E/O engine-out<br />

E&E electronics and equipment<br />

EAA Experimental Aircraft Association<br />

EACARS enhanced ACARS<br />

EAD engine alert display<br />

EAD European AIS database<br />

(Eurocontrol)<br />

EADI electronic attitude director indicator<br />

EADS European Aeronautic Defence and<br />

Space Co.<br />

EAFR enhanced airborne flight recorder<br />

EAI engine anti-ice<br />

EAL evaluation assurance level<br />

EAL-7 evaluation assurance level-7<br />

EANPG European Air Navigation Planning<br />

Group<br />

EAP engine alert processor<br />

EAROM electrically alterable read-only<br />

memory<br />

EARTS en route automated radar tracking<br />

system<br />

EAS equivalent airspeed<br />

EASA European <strong>Aviation</strong> Safety Agency<br />

EASIE enhanced ATM and Mode S<br />

implementation in Europe<br />

EATCHIP European air traffic control harmonization<br />

& integration program<br />

EATMS European ATM System (Eurocontrol)<br />

EATRADA European ATM Research and<br />

Development Association<br />

EBR extended bit rate<br />

EC European Commission<br />

ECAC European Civil <strong>Aviation</strong> Conference<br />

ECAM electronic caution alert module<br />

ECC error correcting code<br />

ECEF earth-centered, earth-fixed<br />

ECL emitter coupler logic<br />

eCM equipment conditioning monitoring<br />

ECMP electronic component management<br />

system<br />

ECN engineering change notice<br />

ECO engineering change order<br />

ECP EICAS control panel<br />

ECP engineering change proposal<br />

ECS engineering compiler system<br />

ECS environmental control system<br />

ECS event criterion subfield<br />

ECSL left environmental control system<br />

card<br />

ECSMC ECS miscellaneous card<br />

ECSR right environmental control<br />

system card<br />

ECU electronic control unit<br />

ED EICAS display<br />

EDA electronic design automation<br />

EDAC error detection and correction<br />

EDARC enhanced direct access radar<br />

channel<br />

Sandel SN3500 EHSI<br />

EDC error detection and correction<br />

EDDS electronic document distribution<br />

service<br />

EDI electronic data interchange<br />

EDI engine data interface<br />

EDIF engine data interface function<br />

EDIS emergency digital information<br />

service<br />

EDIU engine data interface unit<br />

EDMS electronic data management system<br />

EDP electronic data processing<br />

EDP engineering development pallet<br />

EDP engine driven pump<br />

EDS embedded diagnostic system<br />

EDS explosive detection system<br />

EDU electronic display unit<br />

EE electrical engineer<br />

EE electronics equipment<br />

EEAS enhanced en-route automation<br />

system<br />

EEC electronic engine control<br />

EEC Eurocontrol Experimental Center<br />

EEPROM electrical erasable programmable<br />

ROM<br />

EEU ELMS electronics unit<br />

EFB electronic flight bag<br />

EFC expected further clearance<br />

EFD electronic flight display<br />

EFDAS European logical flight data<br />

server (Eurocontrol)<br />

EFDP European flight data processing<br />

(Eurocontrol)<br />

EFIC electronic flight instrument<br />

controller<br />

EFIP electronic flight instrument<br />

processor<br />

EFIS electronic flight instrument system<br />

EFIS CP EFIS control panel<br />

EGI embedded GPS/INS<br />

EGIHO expedited ground-initiated handoff<br />

EGNOS European Geostationary Overlay<br />

System<br />

EGP exterior gateway protocol<br />

EGPWS enhanced ground proximity<br />

warning system<br />

EGT exhaust gas temperature<br />

EHF extremely high frequency<br />

EHSI electronic horizontal situation<br />

indicator<br />

EHV electro-hydraulic valve<br />

EIA Electrical Institute of America<br />

EIA Electronic Industries Association<br />

EICAS engine indication and crew alert<br />

system<br />

EICASC EICAS controls<br />

EIPI extended initial protocol identifier<br />

EIRP earth incident radiated power<br />

EIRP effective isotropic radiation power<br />

EIS electronic instrument system<br />

EIS engine indication system<br />

EIS environmental impact statement<br />

EISA extended industry standard<br />

architecture<br />

EIU electronic interface unit<br />

ELB electronic logbook<br />

ELEC electrical<br />

ELM extended length message<br />

ELMS electrical load management system<br />

ELS electronic library system<br />

ELT emergency locator transmitter<br />

EM electromagnetic<br />

EM element manager<br />

EMATS endurance management air traffic<br />

system<br />

28 Avionics Magazine December 2008 www.avtoday.com/av

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••• Aerospace Acronym <strong>Guide</strong><br />

EMC electromagnetic compatibility<br />

EMC entertainment multiplexer controller<br />

EMD engineering, manufacturing and<br />

development<br />

EMER emergency<br />

EMI electromagnetic interference<br />

EMS emergency medical services<br />

EMS engine management system<br />

EMU expansion module unit<br />

ENG engine<br />

ENOC engineering network operations<br />

center<br />

EO/IR electro-optic/infrared<br />

EOD end of day<br />

EO DAS electro-optical distributed aperture<br />

system<br />

EOLA European pre-operational data<br />

link applications<br />

EOM end of message<br />

EOT end of text<br />

EOTS electro-optical targeting system<br />

EP engineering project<br />

EP external power<br />

EPC engineering project contractor<br />

EPCS engine propulsion control system<br />

EPLD electronically programmable logic<br />

device<br />

EPLRS enhanced position location and<br />

reporting system<br />

EPR engine pressure ratio<br />

Mid-Continent ESAI<br />

EPROM erasable programmable ROM<br />

EPS electrical power system<br />

EPV end-point voltage<br />

EQTG electronic qualification test guide<br />

ERAM En Route Automation Modernization<br />

ERAST environment research aircraft<br />

and sensor technology<br />

ERB Engineering Review Board<br />

ERD end routing domain<br />

EROPS extended range operations<br />

ERP effective radiation power<br />

ERP eye reference point<br />

ERPDU error protocol data unit<br />

ERP PDU echo replay protocol data unit<br />

ERQ PDU echo request protocol data unit<br />

ERU engine replay unit<br />

ES end system<br />

ES extended squitter<br />

ESA European Space Agency<br />

ESAI electronic standby attitude indicator<br />

ESAS electronic situation awareness<br />

system<br />

ESAS enhanced situational awareness<br />

system<br />

ESD electrostatic discharge<br />

ESDS electrostatic discharge and soldering<br />

ESH end system hello<br />

ESID engine and system indication<br />

display<br />

ESIS electronic standby instrument<br />

system<br />

ESIS engine and system indication<br />

system<br />

ESM electronic support measures<br />

ESOIC enhanced small-outline IC<br />

ESR equivalent-series resistance<br />

ESS electronic switching system<br />

ESS environmental stress screening<br />

ESSD electrostatic sensitive devices<br />

ESU environmental sensor unit<br />

ETA estimated time of arrival<br />

ETAS enhanced TRACON/tower automation<br />

system<br />

ETB end of block (ASCII/IA5 character)<br />

ETB engineering test bed<br />

ETC estimated time of completion<br />

ETD estimated time of departure<br />

www.avtoday.com/av December 2008 Avionics Magazine 29

---

Aerospace Acronym <strong>Guide</strong> •••<br />

ETE estimated time enroute<br />

ETI elapsed time indicator<br />

ETM elapsed time measurement<br />

ETM electronic training manuals<br />

ETMS engine-trend monitoring services<br />

ETMS enhanced traffic management<br />

system<br />

ETNO European Telecommunications<br />

Network Operators<br />

ETOPS extended operations<br />

ETOPS extended twin-engine operations<br />

ETP equal time point (halfway there,<br />

by time)<br />

ETRC expected taxi ramp clearances<br />

ETVS enhanced terminal voice switch<br />

ETX end of transmission<br />

EU electronic unit<br />

EU European Union<br />

EUAFS enhanced upper air forecast system<br />

EUPS external uninterruptible<br />

power supply<br />

EURATN European ATN<br />

EURET European research on transport<br />

systems<br />

EUROCAE European Organization for Civil<br />

<strong>Aviation</strong> Equipment (European<br />

equivalent of RTCA)<br />

EV earned value<br />

EVM error vector magnitude<br />

EVS enhanced vision system<br />

EW electronic warfare<br />

EWIS electrical wiring interconnection<br />

system<br />

EZAP enhanced zonal analysis<br />

procedures<br />

F<br />

F Fahrenheit<br />

F/O first officer<br />

F&E facilities and equipment<br />

FA final approach<br />

FAA Federal <strong>Aviation</strong> Administration<br />

(U.S.)<br />

FAA/EURO FAA/Eurocontrol R&D committee<br />

FAATC FAA Technical Center<br />

FAB functional airspace blocks<br />

FAB-T family of advanced beyond-lineof-sight<br />

terminals<br />

FAC flight augmentation computer<br />

FADEC full authority digital engine/electronic<br />

control<br />

FAF final approach fix<br />

FAI first article inspection<br />

FAMIS full aircraft management/inertial<br />

system<br />

FANS Future Air Navigation System<br />

(ICAO)<br />

FAR federal acquisition regulation<br />

FAR federal aviation regulation<br />

FAST final approach spacing tool<br />

FAT factory acceptance test<br />

FBCB2 Force XXI Battle Command Brigade<br />

and Below<br />

FBL fly by light<br />

FBN fly by night<br />

FBO fixed-base operator<br />

FBW fly by wire<br />

FC functional capability<br />

FC foot candles<br />

FC-AV Fibre Channel-Audio Video<br />

FCA functional configuration audit<br />

FCC Federal Communications Commission<br />

(U.S.)<br />

FCC flight control computer<br />

FCDC flight critical direct current<br />

FCM future concepts for maintenance<br />

FCMA FANS Central Monitoring Agency<br />

FCP flight control panel<br />

FCP flight control processor<br />

FCS flight control system<br />

FCS frame check sequence<br />

FCS Future Combat Systems<br />

FCS future concepts for simulators<br />

FD flight dynamics/director<br />

FD final data<br />

FDAF flight data acquisition function<br />

FDAU flight data acquisitions unit<br />

Universal Avionics FMS<br />

FDB flight plan data bank<br />

FDDI fiber distribution data interface<br />

FDE fault detection and exclusion<br />

FDEP flight data entry panel<br />

FDH flight deck handset<br />

FDI fault detection and isolation<br />

FDIMU flight data interface management<br />

unit<br />

FDIO flight data input/output<br />

FDM flight data monitoring<br />

FDM frequency division multiplex<br />

FDMA frequency division multiple<br />

access<br />

FDPS flight data processing system<br />

FDR flight data recorder<br />

FDRS flight data recorder system<br />

FDP flight data processor<br />

FEATS Future European Air Traffic Management<br />

System<br />

FEC forward error correction<br />

FEP front-end processor<br />

FERNS Far East Radio Navigation Service<br />

FF fuel flow<br />

FFS full flight simulator<br />

FFT full flight trainer<br />

FGC flight guidance computer<br />

FGS flight guidance system<br />

FHA functional hazard assessment<br />

FIAO flight inspection area office<br />

FIB forwarding information base<br />

FIFO first in, first out<br />

FIM fault isolation manual<br />

FIR flight information region<br />

FIS flight information services<br />

FIS-B FIS-broadcast<br />

FIX position in space usually on<br />

aircraft’s flight plan<br />

FL flight level<br />

FL foot lampert<br />

FLCH flight level change<br />

FLIR forward-looking infrared<br />

FLTCK flight check<br />

FltWinds flight and weather information<br />

and decision support<br />

FLW forward-looking windshear radar<br />

FM frequency modulation<br />

FMA flight mode annunciator<br />

FMAC Frequency Management Advisory<br />

Council<br />

FMC flight management control/computer<br />

FMC FPGA mezzanine card<br />

FMC future concepts for maintenance<br />

FMCDU flight management control and<br />

display unit (FMS)<br />

FMCF flight management computer<br />

function<br />

FMCS flight management computer<br />

system<br />

FMCW frequency-modulated continuous<br />

wave<br />

FMEA failure mode and effects analysis<br />

FMF flight management function<br />

FMGC flight management guidance<br />

computer<br />

FMGEC flight management guidance<br />

envelope computer<br />

FMP flight mode panel<br />

FMS flight management system<br />

FMS full mission simulator<br />

FMSG Frequency Management Study<br />

Group (ICAO)<br />

FMST flight management system trainer<br />

FMU fuel metering unit<br />

FNPRM further notice of proposed<br />

rulemaking<br />

FOC full operational capability<br />

FOC fuel/oil cooler<br />

FOD foreign object debris<br />

FODA flight operations data assurance<br />

FOG fiber optic gyro<br />

FOQA flight operational quality assurance<br />

FOS fiber optics subcommittee<br />

FOV field of view<br />

FOWG fiber optics working group<br />

FPA flight path angle<br />

30 Avionics Magazine December 2008 www.avtoday.com/av

---

••• Aerospace Acronym <strong>Guide</strong><br />

FPA focal plane array<br />

FPAC flight path acceleration<br />

FPC flight profile comparator<br />

FPGA field programmable gate array<br />

FPM feet per minute<br />

FPV flight path vector<br />

FQIS fuel quality indicating system<br />

FQPU fuel quality processor unit<br />

FQR formal qualification review<br />

FR frame relay<br />

FRA flap retraction altitude<br />

FRAD frame relay access device<br />

FRCS flight recorder configuration<br />

standard<br />

FRED flight recorder electronic<br />

documentation<br />

FRM fault reporting manual<br />

FRM flammability reduction means<br />

FRM frame reject mode<br />

FRMR frame reject<br />

FRP Federal Radionavigation Plan<br />

(U.S.)<br />

FRPA fixed reception pattern antenna<br />

FRQ frequency<br />

FSAS flight service automation system<br />

FSDO Flight Standards District Office<br />

(FAA)<br />

FSE FANS systems engineering<br />

FSE field service engineer<br />

FSEMC Flight Simulator Engineering and<br />

Maintenance Conference<br />

FSEU flap slat electronics unit<br />

FSF Flight Safety Foundation<br />

FSM flight schedule monitoring<br />

FSS flight service station<br />

FSWE FANS software engineering<br />

FT functional test<br />

FT/ADIRS fault tolerant/air data inertial<br />

reference system<br />

FTE flight technical error<br />

FTK freight tonne kilometers<br />

FTP file transfer protocol<br />

FTPP fault tolerant power panel<br />

FTS Federal Telecommunications<br />

System<br />

FVHF future VHF system study<br />

(Eurocontrol)<br />

FW failure warning<br />

FW firewall router<br />

FWC flight warning computer<br />

FWD forward<br />

FWS flight warning system<br />

FY fiscal year<br />

G<br />

G/A ground/air or ground-to-air<br />

G/G ground/ground<br />

G/S glide slope<br />

GA general aviation<br />

GA go-around<br />

GAAS gallium arsenide<br />

GACS genetic ATN communications<br />

service<br />

GAGAN geostationary augmentation<br />

network<br />

GAIN galley inserts<br />

GAIT ground-based augmentation and<br />

integrity technique<br />

GAMA General <strong>Aviation</strong> Manufacturers<br />

Association<br />

GAN global area network<br />

GAO Government Accountability Office<br />

(U.S.)<br />

GATM global air traffic management<br />

GAViS general aviation vision system<br />

GBAS ground-based augmentation<br />

system<br />

Garmin GPS display<br />

GBST ground based software tool<br />

GBT ground-based transceiver<br />

Gbyte gigabyte (billion bytes)<br />

GCA ground-controlled approach<br />

GCAS ground collision avoidance<br />

system<br />

GCB generator circuit breaker<br />

GCC ground cluster controller (ACARS)<br />

GCP glare-shield control panel<br />

GCS ground clutter suppression<br />

GCU generator control unit<br />

GDLP ground data link processor<br />

GDOP geometric dilution of precision<br />

GDP ground delay program<br />

GENOT general notice<br />

GEO geosynchronous/geostationary<br />

earth orbit<br />

GEP ground entry point<br />

GES ground earth station<br />

GFE government furnished equipment<br />

GFI general format identifier<br />

GFLOPS gigaflops<br />

GFSK Gaussian frequency shift keying<br />

GG graphics generator<br />

GGR G/G router<br />

GGS GPS ground station<br />

GGTFM ground-ground traffic flow management<br />

GH ground handling<br />

GHz gigahertz<br />

GI group identifier<br />

GIB GNSS integrity broadcast<br />

GIC GNSS integrity channel<br />

GIC GPS integrity channel<br />

GIG Global Information Grid<br />

GIG-BE GIG-Band Expansion<br />

GICB ground-initiated comm-B<br />

GIHO ground initiated handoff<br />

GINS GPS-inertial navigation systems<br />

GIOVE-A Galileo In-Orbit Validation<br />

Experiment-A<br />

GIP government-industry partnership<br />

GIS geodetic information system<br />

GIS graphical information system<br />

GIVE grid inospheric vertical error<br />

GJU Galileo joint undertaking<br />

GL ground location (ACARS/AFEPS)<br />

GL group length<br />

GLC geographic locator codes<br />

GLNS GPS landing and navigation system<br />

GLONASS Global Navigation Satellite<br />

System (Russia)<br />

GLS GNSS landing system<br />

GLS GPS landing system<br />

GLU GPS landing unit<br />

GM guidance material<br />

GMC ground movement control<br />

GMDS ground mobile data service<br />

GMR giant magnetoresistive<br />

GMR Ground Mobile Radio<br />

GMT Greenwich mean time<br />

GMTI ground moving target indicator<br />

GMU GPS monitoring unit<br />

GNA global network architecture<br />

GNE gross navigational error<br />

GNR global navigation receiver<br />

GNSS global navigation satellite system<br />

GNSSP GNSS Panel (ICAO)<br />

GoMATS Gulf of Mexico advanced traffic<br />

surveillance<br />

GOPS giga operations<br />

GOS grade of service<br />

GOSIP government open systems<br />

interconnection profile<br />

GP general purpose<br />

GPADIRS global positioning, air data,<br />

inertial reference system<br />

GPCBT guidelines for the production of<br />

computer-based training<br />

(Eurocontrol)<br />

GP&C global positioning and<br />

communications<br />

GPIB general purpose instrument bus<br />

GPIRS global positioning/inertial<br />

reference system<br />

GPP general purpose processor<br />

GPPU general-purpose processing unit<br />

GPRS general packet radio services<br />

GPS Global Positioning System<br />

GPSSU GPS sensor unit<br />

GPU ground power unit<br />

GPWC ground proximity warning computer<br />

GPWS ground proximity warning system<br />

GR ground router<br />

GRAS ground-based regional<br />

augmentation system<br />

GRIP gridded binary (National Weather<br />

Service model output)<br />

www.avtoday.com/av December 2008 Avionics Magazine 31

---

Aerospace Acronym <strong>Guide</strong> •••<br />

GRP geographic reference point<br />

GS ground speed/station<br />

GSC ground station controller (ACARS)<br />

GSE ground support equipment<br />

GSIF ground station information frame<br />

GSM global systems mobile<br />

GSMS ground station management system<br />

GSP glare shield panel<br />

GTC data link ground terminal computer<br />

GUI graphical user interface<br />

GVE graphics vector engine<br />

GW gateway<br />

GWDS graphic weather display system<br />

GWS graphical weather services<br />

H<br />

HAA high-altitude airship<br />

HAD hardware architecture document<br />

HADS high-altitude platform station<br />

HALE high-altitude, long-endurance<br />

HARS high altitude route system<br />

HCI human-computer interface<br />

Thales TopOwl HMD<br />

HCP heads-up control panel<br />

HCS host computer system<br />

HDD head-down display<br />

HDG heading<br />

HDG SEL heading select<br />

HDL hybrid data link<br />

HDLC high-level data link control<br />

HDLC-B HDLC-balanced<br />

HDLMS hybrid data link management<br />

system<br />

HDMI high-definition multimedia interface<br />

HDOP horizontal dilution of precision<br />

HDP hardware development plan<br />

HDTV high-definition television<br />

HE altitude error<br />

HEA head equipment assembly<br />

HERF high-energy radio frequency<br />

(or energy radiated fields: dense)<br />

HF high frequency<br />

HF human factors<br />

HFACS human factors analysis and<br />

classification system<br />

HFDL high frequency data link<br />

HFDM high-frequency data modem<br />

HFDR high frequency data radio<br />

HFI human factors integration<br />

HFNPDU high frequency network protocol<br />

data unit<br />

HFS high frequency system<br />

HFSG human factor study group<br />

HFSNL high frequency subnetwork layer<br />

HFWG human factors working group<br />

HGA high gain antenna<br />

HGAS HGA system<br />

HGC head-up guidance computer<br />

HGS head-up guidance system<br />

HGS HFDL ground station<br />

HHLD heading hold<br />

HID host interface display<br />

HIL horizontal integrity limit<br />

HIRF high intensity radiated field<br />

HITS highway in the sky<br />

HLCS high lift control system<br />

HLE higher layer entity<br />

HLL high level language<br />

HMD helmet-mounted display<br />

HMI hazardously misleading information<br />

HMI human-machine interface<br />

HMOS high density metal oxide<br />

semiconductor<br />

HMS handheld manpack and small<br />

form fit<br />

HMSD Helmet Mounted Sight & Display<br />

HMU height monitoring unit<br />

HO handoff<br />

HOCSR host/oceanic computer system<br />

replacement<br />

HOTAS hands on throttle and stick<br />

HOW hand-over word<br />

HP high pressure<br />

HP holding pattern<br />

hPa hecto Pascal<br />

HPA high power amplifier<br />

HPC high pressure compressor<br />

HPR high power relay<br />

HPSOV high pressure shutoff valve<br />

HPT high pressure turbine<br />

HRD home routing domain<br />

HS-DSAD high speed frame relay service<br />

access device<br />

HSD high-speed data<br />

HSI horizontal situation indicator<br />

HSIT hardware and software<br />

integration test<br />

HSL heading select<br />

HSR high stability reference<br />

HSRP hot standby routing protocol<br />

HTC highest two-way channel<br />

HUD head-up display<br />

HUMS health and usage monitoring<br />

system<br />

HVPS high voltage power supply<br />

HWCI hardware configuration item<br />

HX heat exchanger<br />

HYD hydraulic<br />

HYDIM HYD interface module<br />

Hz Hertz (cycles per second)<br />

I<br />

I/O input/output<br />

IA interoperability assessment<br />

I&TE integration and test engineering<br />

IACSP international aeronautical communications<br />

service provider<br />

IAC integrated avionics computer<br />

IAGS integrated ARINC ground station<br />

IANA Internet assigned number authority<br />

IAOA indicated angle of attack<br />

IAOPA International Council of Aircraft<br />

Owners and Pilots Association<br />

IAPA instrument approach procedures<br />

automation<br />

IAPS integrated avionics processing<br />

system<br />

IARP inverse address resolution protocol<br />

IAS indicated airspeed<br />

IAT investment analysis team<br />

IATA International Air Transport<br />

Association<br />

IBAC International Business <strong>Aviation</strong><br />

Council<br />

IC integrated circuit<br />

IC intercabinet<br />

ICAO International Civil <strong>Aviation</strong><br />

Organization<br />

ICARD ICAO five-letter name code &<br />

route designator system<br />

ICAP improved capability<br />

ICC IAPS card cage<br />

ICCAIA International Coordinating Council<br />

of Aerospace Industries Association<br />

ICD interactive design center<br />

ICD interface control document/drawing<br />

ICD installation control drawing<br />

ICM interline communications manual<br />

ICMP Internet control message protocol<br />

ICNIA integrated communications, navigation<br />

and identification avionics<br />

ICP integrated core processor<br />

ICS intercommunications system<br />

ICS interface control specification<br />

ICSS integrated communication<br />

switching system<br />

ICU instrument comparator unit<br />

ICU integrated control unit<br />

ID identifier/identification<br />

IDC indicator display/control<br />

IDC internal diagnostic capabilities<br />

IDD interface design document<br />

IDEN integrated digital enhanced<br />

network<br />

32 Avionics Magazine December 2008 www.avtoday.com/av

---

••• Aerospace Acronym <strong>Guide</strong><br />

IDG integrated drive generator<br />

IDI initial domain identifier<br />

IDIQ indefinite-delivery/indefinite<br />

quantity<br />

IDM Improved Data Modem<br />

iDMU integrated data management unit<br />

IDP initial domain part<br />

IDRP interdomain routing protocol<br />

IDS ice detection system<br />

IDS inter-domain system<br />

IDS integrated display system<br />

IDU interactive display unit<br />

IEC IAPS environmental control<br />

module<br />

IEC International Electrotechnical<br />

Commission<br />

IEC International Engineering<br />

Consortium<br />

IED insertion extraction device<br />

IEEE Institute of Electrical and<br />

Electronics Engineers<br />

IF intermediate frequency<br />

IFALPA International Federation of Airline<br />

Pilots Association<br />

IFASS integrated system for surveillance<br />

and radio transmission<br />

IFATCA International Federation of Air<br />

Traffic Controllers’ Association<br />

IFC indicated final cost<br />

IFDL intraflight data link<br />

IFE in-flight entertainment<br />

IFF identification, friend or foe<br />

IFIS Integrated Flight Information<br />

System<br />

IFPS integrated initial flight plan<br />

processing system<br />

IFR instrument flight rules<br />

Rockwell Collins IFIS<br />

IFRB International Frequency<br />

Registration Board<br />

IGES initial graphic exchange<br />

specification<br />

IGES intermediate ground earth station<br />

IGIA Interagency Group on<br />

International <strong>Aviation</strong><br />

IGV inlet guide vane<br />

IHAS integrated hazard avoidance<br />

system<br />

ILA International Law Association<br />

ILM independent landing monitor<br />

ILS instrument landing system<br />

ILSP integrated logistics support plan<br />

IMA integrated modular avionics<br />

IMC instrument meteorological<br />

conditions<br />

IMG implementation manager group<br />

IMU inertial measurement unit<br />

INFO information frame<br />

INAV interactive navigation<br />

Benefits:<br />

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End-to-end testing of MIL-STD-1553 data<br />

networks using a single tool.<br />

Save time and money by locating problems<br />

faster and more precisely.<br />

Easy to set up and use Windows TM software.<br />

Perform comparative analysis against historical<br />

data.<br />

Monitor up to four 1553 bus channels<br />

simultaneously.<br />

TDR testing of twisted pair MIL-STD-1553<br />

quickly detects opens, shorts and faulty shields.<br />

Quickly find cabling faults to within six inches.<br />

Portable, rugged unit meets MIL-PRF-28800<br />

Class 2, and is ideal for flightline and field use.<br />

Removable hard disk and memory write<br />

protection for classified environments.<br />

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inHg inches of mercury<br />

INMARSAT International Maritime Satellite<br />

Organization<br />

INMS integrated network management<br />

system<br />

INS inertial navigation system<br />

INTELSAT International Telecommunications<br />

Satellite Organization<br />

InterNIC Internet Network Information<br />

Center<br />

Interop interoperability<br />

IOC initial operating capability<br />

synchronized instrumentation<br />

All-In-One Toolset for<br />

MIL-STD-1553 Network Analysis<br />

Bus Characterization<br />

and Integrity Toolset<br />

ITCN's new BCIT toolset makes<br />

testing MIL-STD-1553 data bus<br />

networks faster, easier and<br />

more accurate.<br />

The BCIT troubleshoots bus<br />

networks and locates faults to<br />

within 6 inches on network<br />

cables up to 1,000 ft. long. It<br />

also aids in identifying faulty<br />

LRUs that do not participate in<br />

bus communications properly<br />

by monitoring bus health and<br />

performance.<br />

The BCIT's database driven<br />

Windows-based software<br />

allows users to configure and<br />

save their test data and bus<br />

topology for future analysis,<br />

and provides color-coded<br />

graphic displays for intuitive<br />

fault indications.<br />

www.avtoday.com/av December 2008 Avionics Magazine 33

---

Aerospace Acronym <strong>Guide</strong> •••<br />

ION Institute of Navigation<br />

IOR Indian Ocean region<br />

IOS Internet operating system<br />

IOT&E initial operational test and<br />

evaluation<br />

IP intellectual property<br />

IP Internet protocol<br />

IPACG Informal Pacific ATC Coordination<br />

Group<br />

IPC intermediate pressure compressor<br />

IPC interprocess communication<br />

IPD industrial products division<br />

IPI initial protocol identifier<br />

IPT integrated product team<br />

IPL illustrated parts list<br />

IPR Internet protocol router<br />

IPS internet service providers<br />

IPT integrated product team<br />

IPT integrated project team<br />

IPT intermediate pressure turbine<br />

IR infrared<br />

IRAC Interdepartmental Radio Advisory<br />

Committee<br />

IR&D investment research and<br />

development<br />

IRIG-B inter-range instrumentation<br />

group-time code format B<br />

IRIS Iris Recognition Immigration System<br />

IRP integrated refuel panel<br />

IRR internal rate of return<br />

IRS inertial reference system<br />

IRS interface requirements specification<br />

IRU inertial reference unit<br />

IS intermediate system<br />

ISA industry standard architecture<br />

ISA Instrument Society of America<br />

ISC integrated systems controller<br />

ISDN integrated services digital network<br />

ISDOS information system design and<br />

optimization system<br />

ISDU inertial system display unit<br />

ISH intermediate system hello<br />

ISIS integrated sensor is structure<br />

ISLN isolation<br />

ISMS in-flight safety monitoring system<br />

ISO International Standards<br />

Organization<br />

ISO PA ISO protocol architecture<br />

ISP integrated switching panel<br />

ISP internet service providers<br />

ISR Intelligence, Surveillance and<br />

Reconnaissance<br />

ISR interrupt service routine<br />

ISS integrated surveillance system<br />

ISSN intermediate system sub-network<br />

ISSS initial sector suite system/subsystem<br />

ISU initial signal unit<br />

ITAR International Traffic in Arms<br />

Regulations<br />

ITC in-trail climb<br />

ITD in-trail descent<br />

ITM IT management<br />

ITS integrated test system<br />

ITSE integrated test and support<br />

environment<br />

ITU International Telecommunications<br />

Union<br />

ITWS integrated terminal weather<br />

system<br />

IUPS internal uninterruptible power<br />

supply<br />

IV isolation valve<br />

IVSI instantaneous vertical speed<br />

indicator<br />

J<br />

J-UCAS joint unmanned combat air<br />

systems<br />

J/S jammer-to-signal ratio<br />

JAA Joint <strong>Aviation</strong> Authority<br />

JCA Joint Cargo Aircraft<br />

JAR joint airworthiness requirement<br />

JAR-OPS Joint <strong>Aviation</strong> Regulations Operations<br />

JAR-AWO JAR-all weather operations<br />

JATO jet assisted takeoff<br />

JCAB Japanese Civil <strong>Aviation</strong> Bureau<br />

JCAT Joint Combat Assessment Team<br />

JFET junction field effect transistor<br />

JFEX Joint Expeditionary Force<br />

Experiment<br />

JFS Joint Strike Fighter<br />

JFX Joint Forces Exercise<br />

Flight Display Systems LCDs<br />

JHMCS joint helmet-mounted cueing<br />

systems<br />

JPALS Joint Precision Approach and<br />

Landing System<br />

JPDO Joint Planning Development<br />

Office (U.S.)<br />

JPEO Joint Program Executive Office<br />

Joint Tactical Radio System<br />

JPL Jet Propulsion Laboratory<br />

JPO Joint Planning Office<br />

JPS journal processing system<br />

JRANS Japanese regional air navigation<br />

system<br />

JRC Joint Resource Council<br />

JSTeF JTRS Science and Technology<br />

Forum<br />

JSAT joint system acceptance test<br />

JTAG Joint Test Action Group<br />

JTIDS joint tactical information distribution<br />

system<br />

JTRS joint tactical radio system<br />

JV joint venture<br />

JVMF joint variable message format<br />

K<br />

kA kiloamperes<br />

KARI Korea Aerospace Research Institute<br />

KB kilobytes (thousand bytes)<br />

KBITS kilobits<br />

Kbps kilobits per second<br />

Kgls kinematic GPS landing system<br />

KHz kilohertz (1000 cycles per second)<br />

KPS KB per second<br />

KTS knots<br />

KVA kilovolt-ampere<br />

KW kilowatt<br />

L<br />

L1 L-band carrier (1575.42 MHz)<br />

L2 L-band carrier (1227.6 MHz)<br />

LAAS local area augmentation system<br />

LACAC Latin American Civil <strong>Aviation</strong><br />

Commission<br />

LADAR laser radar<br />

LADGPS local area differential GPS<br />

LAGPS local area global positioning<br />

system<br />

LAHSO land and hold short operation<br />

LAIRCM large aircraft infrared<br />

countermeasures<br />

LAM levels of avionics maintenance<br />

LAN local area network<br />

LAPB link access protocol, balanced<br />

LASER light amplification by simulated<br />

emission of radiation<br />

LAT latitude<br />

LBA Luftfahrt-Bundesamt (Germany)<br />

LCA layered component architecture<br />

LCC leadless chip carrier<br />

LCC life cycle cost<br />

LCC low-cost carrier<br />

LCD liquid crystal display<br />

34 Avionics Magazine December 2008 www.avtoday.com/av

---

••• Aerospace Acronym <strong>Guide</strong><br />

LCF link control field<br />

LCI logical channel identifier<br />

LCN local communications network<br />

LCP lighting control panel<br />

LCR link connection refusal<br />

LDA landing directional aid<br />

LDA laterally displaced approach<br />

LDCC leaded chip carrier<br />

LDCS local departure control system<br />

LDGPS local area differential global positioning<br />

satellite<br />

LDOC long distance operational control<br />

LDRCL low density radio-communications<br />

link<br />

LDU lamp driver unit<br />

LE link establish<br />

LED light-emitting diode<br />

LEO low earth orbiting<br />

LF low frequency<br />

LFE lead-free electronics<br />

LFR LF radio range<br />

LGA low gain antenna<br />

LHP lighting HIRF protection<br />

LIDAR light detection and ranging<br />

LIMNATRAN limited North Atlantic regional air<br />

navigation<br />

LINCS long-haul/leased interfacility<br />

national airspace communications<br />

system<br />

LISN line impedance stabilization<br />

network<br />

LLC logical link control<br />

LLWAS low-level wind shear alert system<br />

LME link management entity<br />

LMI logical management interface<br />

LMM locator middle marker<br />

LMT local mean time<br />

LNA low-noise amplifier<br />

LNAV lateral navigation<br />

LOB left outboard<br />

LOC localizer/location<br />

LOM locator outer marker<br />

LON longitude<br />

LOPA layout of passenger<br />

accommodations<br />

LORAN long-range air navigation<br />

LOS line of sight<br />

LPB loss prevention bulletin<br />

LPC low pressure compressor<br />

LPDU link protocol data unit<br />

LPT low pressure turbine<br />

LPV localizer performance with<br />

vertical guidance<br />

LRC long-range cruise<br />

LRM line replaceable module<br />

LRR long-range radar<br />

LRU line replaceable unit<br />

LSAS longitudinal stability augmentation<br />

system<br />

LSB least significant bit<br />

LSB lower sideband<br />

LSD least significant digit<br />

LS-DSAD low speed frame relay service<br />

access device<br />

LS-FRAD low speed frame relay access<br />

device<br />

LSI large scale integration<br />

LSK line select key<br />

LSN local subnetwork<br />

LSP link state PDU<br />

LSS lightening sensor system<br />

LTA lighter-than-air<br />

LTD laser target designator<br />

LTC lowest two-way channel<br />

LV lower sideband voice<br />

LVC low visibility conditions<br />

LVL level<br />

LVDT linear voltage differential<br />

transducer<br />

LVP low visibility procedure<br />

LVPS low voltage power supply<br />

LVT low volume terminal<br />

M<br />

M mach number<br />

M2K Mobility 2000 (U.S. Air Force)<br />

M-SNDCF mobile-subnetwork dependent<br />

convergence function<br />

M-TADS Modernized Target Acquisition<br />

and Designation Sight<br />

M/ASI mach/airspeed indicator<br />

M&S merging & spacing<br />

MA message assurance<br />

MAA maximum authorized IFR altitude<br />

MAB Military ATM Board (Europe)<br />

MAC medium access controller<br />

MACC military area control center<br />

MACS multiple access communication<br />

system<br />

MADARS malfunction detection, analysis<br />

and recording system<br />

MAGIC manager of air-ground interface<br />

communications<br />

MAHWP missed approach holding waypoint<br />

MALDT mean administrative and logistics<br />

delay time<br />

MALE medium-altitude, long-endurance<br />

MAN metropolitan area network<br />

MANPADS man portable air defense system<br />

MAP missed alert parameter<br />

MAP missed approach<br />

MAP missed approach procedure<br />

MAP monitor alert parameter<br />

MAPt missed approach point<br />

MAR mobile access router<br />

MARSA military assumes responsibility<br />

for separation<br />

MASPS minimum aviation system performance<br />

standard<br />

MAST multiaircraft simulation terminal<br />

MAT maintenance access terminal<br />

MAV micro air vehicle<br />

MAWP missed approached waypoint<br />

MAX maximum<br />

mb millibars<br />

MB marker beacon<br />

MBE multiple bit error<br />

MBER minimum bit error rate<br />

MBPS megabytes per second<br />

MC master change<br />

MCA minimum crossing altitude<br />

MCAP Manned/Unmanned Common<br />

Architecture Processor<br />

MCB microwave circuit board<br />

MCC maintenance control computer<br />

MCDP maintenance control display<br />

panel<br />

MCDU multifunctional control display unit<br />

MCI mode C intruder<br />

MCN manufacturing control number<br />

MCOS multi-computing operating system<br />

MCP maintenance control panel<br />

MCP mode control panel<br />

MCT max continuous thrust<br />

MCU modular concept unit<br />

MCU multifunction concept unit<br />

MDA minimum descent altitude<br />

Chelton Flight Systems MFD<br />

MDA Missile Defense Agency<br />

MDAH minimum descent altitude/height<br />

MDAU maintenance data acquisition unit<br />

MDC maintenance diagnostic computer<br />

MDCRS Meteorological Data Collection<br />

and Reporting Service<br />

MDD mission data debrief<br />

MDL multipurpose data link<br />

MDR mode digital radio<br />

MDS minimum discernible signal<br />

MDT maintenance display terminal<br />

MDT mean downtime<br />

MEA minimum en route altitude<br />

MEC main equipment center<br />

MEL minimum equipment list<br />

MEO medium earth orbit<br />

MEOT multiple-expert opinion team<br />

MES main engine start<br />

MET meteorology<br />

METAR meteorological aviation routine<br />

weather report<br />

MF medium frequency<br />

MFCP multifunction control display panel<br />

MFD multifunction display<br />

MFDS multifunction display system<br />

www.avtoday.com/av December 2008 Avionics Magazine 35

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Aerospace Acronym <strong>Guide</strong> •••<br />

MFDU multifunction display unit<br />

MFDUA miscellaneous flight data acquisition<br />

unit<br />

MFIT mean fault isolation time<br />

MFM maintenance fault memory<br />

MGSCU main gear steering control unit<br />

MGR manager<br />

MHD magnetic hard drive<br />

MHD multi-hazard display<br />

MHRS magnetic heading reference system<br />

MHS message handling service<br />

MHz megahertz<br />

MIB management information base<br />

MIC microphone<br />

MicroEARTS micro en route automated radar<br />

tracking system<br />

MIDS multifunction information distribution<br />

system<br />

MIDS-J Multifunctional Information Distribution<br />

System-JTRS<br />

MIDS-LVT Multifunctional Information<br />

Distribution System Low Volume<br />

Terminal<br />

MIDU multi-purpose interactive display<br />

unit<br />

MILAERO military/aeronautical<br />

MILS multiple independent levels of<br />

security<br />

MILSPEC military specification<br />

MIL-STD military standard<br />

MIMO multi-input/multi-output<br />

MIN minimum/minute<br />

MIPS management interface protocol<br />

specification<br />

MIPS million instructions per second<br />

MKR marker<br />

MLA maneuver limited altitude<br />

MLM mid-level management<br />

MLS microwave landing system<br />

MLW maximum landing weight<br />

MM mass memory<br />

MM middle marker (glideslope)<br />

MMI man-machine interface<br />

MMIC monolithic microwave integrated<br />

circuit<br />

MMR multimode receiver<br />

MMS maintenance management system<br />

MMSI miniature munitions system<br />

interface<br />

MMU memory management unit<br />

MMW millimeter wave<br />

MNCID management network category<br />

interaction diagram<br />

MNPS minimum navigation performance<br />

specification<br />

MNS managed network service<br />

MO managed object<br />

MO magneto-optical<br />

MOA memorandum of agreement<br />

MOA military operation area<br />

MOCA minimum obstacle clearance<br />

altitude<br />

MOD magneto-optical drive<br />

MOD modification<br />

MODEM modulator/demodulator<br />

MOPR minimum operational performance<br />

requirements<br />

MOPS minimum operational performance<br />

standards<br />

MOQA maintenance operations quality<br />

assurance<br />

MORA minimum off-route altitude<br />

MOS metal oxide semiconductor<br />

MOSA modular open systems approach<br />

MOU memorandum of understanding<br />

MOV metal oxide varsitor<br />

MP-CDL Multi-Platform-Common Data<br />

Link<br />

MPAR multipurpose airport radar<br />

MPEG Moving Picture Expert Group<br />

MPCU multiport protocol converter unit<br />

MPDS mobile packet data service<br />

MPEL maximum permissible exposure<br />

level<br />

MPM microwave power module<br />

MPP materials, processes and parts<br />

MPS maintenance processor system/<br />

subsystem<br />

MRA minimum reception altitude<br />

MRR manufacturing revision request<br />

MRT mean repair time<br />

MRT multi-remote terminal<br />

Ms millisecond<br />

MSB most significant bit<br />

MSC Member Services Center<br />

MSC message sequence chart<br />

MSCP mobile satellite service provider<br />

MSD mass storage device<br />

MSG message<br />

MSI medium scale integration<br />

MSK minimum shift keying<br />

MSL mean sea level<br />

MSP Mode S specific protocol<br />

MSSR monopulse secondary surveillance<br />

radar<br />

MSSS Mode S specific services<br />

MSU mode select unit<br />

MT minimum time<br />

MTA message transfer agent<br />

MTBF mean time between failure<br />

MTBO mean time between outages<br />

MTBR mean time between removal/<br />

repairs<br />

MTBUR mean time between unscheduled<br />

removal<br />

MTBUR mean time between unit<br />

replacements<br />

MTC maintenance terminal cabinet<br />

MTD maintenance terminal display<br />

MTF maintenance terminal function<br />

MTI moving target indicator<br />

MTM module test and maintenance<br />

MTMBIU MTM bus interface unit<br />

MTR military training route<br />

MTSAT Multifunction Transport Satellite<br />

MTTDA mean time to dispatch alert<br />

MTTF mean time to failure<br />

MTTM mean time to maintenance<br />

MTTMA mean time to maintenance alert<br />

MTTR mean time to repair<br />

MTTRS mean time to restore service<br />

MTTUR mean time to unscheduled<br />

removal<br />

MU management unit<br />

MUE modernized user equipment<br />

MUOS Mobile User Objective System<br />

MUS minimum use specification<br />

MUSE multi-user system environment<br />

MUX multiplexer<br />

mV millivolts<br />

MWARA major world air route area<br />

MWP meteorological weather processor<br />

MWS missile warning system<br />

N<br />

N1 fan speed<br />

N2 intermediate compressor speed<br />

N3 high-speed compressor<br />

N-UCAS Navy-Unmanned Aerial Combat<br />

System<br />

NACp navigation accuracy category for<br />

velocity<br />

NACA National Advisory Committee for<br />

Aeronautics (U.S.)<br />

NCAR National Center for Atmospheric<br />

Research<br />

NADIN national airspace data<br />

interchange network<br />

NADIN II NADIN packet switch<br />

NAILS national airspace integrated<br />

logistics support<br />

NAK negative acknowledgment<br />

NAOMS National <strong>Aviation</strong> Operational<br />

Monitoring Service<br />

NAPRS national airspace performance<br />

reporting system<br />

NAS national aircraft standard<br />

NAS National Airspace System (FAA)<br />

NASA National Aeronautics and Space<br />

Administration<br />

NASPALS National Airspace System Precision<br />

Approach and Landing System<br />

(FAA)<br />

NAT North Atlantic region<br />

NAT North Atlantic tracks<br />

NATA National Air Transport Association<br />

NATCA National Air Traffic Controllers<br />

Association (U.S.)<br />

NATS National Air Traffic Services (U.K.)<br />

NATS North Atlantic track system<br />

NAT TFG NAT Traffic Forecasting Group<br />

NAV navigation<br />

NAVAID navigational aid<br />

NAVAIR Naval Air Systems Command<br />

NAVSAT navigation satellite<br />

NAVSEA Naval Sea Systems Command<br />

NBAA National Business <strong>Aviation</strong><br />

Association<br />

NC numerical control<br />

NC3A NATO Consultation, Command<br />

and Control Agency<br />

NCATT National Center for Aircraft<br />

36 Avionics Magazine December 2008 www.avtoday.com/av

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••• Aerospace Acronym <strong>Guide</strong><br />

Technician Training<br />

NCD no computed data<br />

NCES Net-Centric Enterprise Services<br />

NCI not currently implemented<br />

NCO Network Centric Operations<br />

NCOIC Network Centric Operations<br />

Industry Consortium<br />

NCOW net-centric operations and warfare<br />

NCP NAS change proposal<br />

NCS network control system<br />

NCS network coordination station<br />

ND navigation display<br />

NDB navigation database<br />

NDB nondirectional radio beacon<br />

NDI nondestructive inspection<br />

NDI nondevelopmental item<br />

NE network element<br />

NEAN North European ADS Network<br />

NEAP North European CNS/ATM<br />

application project<br />

NEC Network-Enabled Capability<br />

NED Network Enterprise Domain<br />

NELS Northwest European Loran System<br />

NEMA National Electrical Manufacturers<br />

Association (U.S.)<br />

NESACC North, East & Southern area<br />

control centers for China<br />

NESDIS national environmental satellite<br />

data and information service<br />

NET network entity title<br />

NEXCOM Next Generation Air/Ground<br />

Communications System<br />

NextGen Next Generation Air Transportation<br />

System (U.S.)<br />

NEXRAD next-generation weather radar<br />

NFF no fault found<br />

NFS network file server<br />

NIAC NAS Information Architecture<br />

Committee (FAA)<br />

NIC navigation integrity category<br />

NIC network interface controller<br />

NIC new installation concept<br />

NICE NAT implementation management<br />

group cost effectiveness<br />

NICE network integrated cabin<br />

equipment<br />

NIH not invented here<br />

NIMA National Imagery and Mapping<br />

Agency (U.S.)<br />

NIMS NAS infrastructure management<br />

system<br />

NIR network interface router<br />

NIRV network interface router VDL<br />

NIS not in service<br />

NISC NAS information security<br />

coordination<br />

NIST National Institute of Standards<br />

and Technology<br />

NIU North American ISDN User Forum<br />

(NIST)<br />

NIP network interface processor<br />

NL network layer<br />

NLM network loadable module<br />

NLP network layer protocol<br />

NLR Netherlands National Aerospace<br />

Laboratory<br />

NM nautical mile<br />

NM network management<br />

NMC National Meteorological Center<br />

NMCCD network management category<br />

class diagram<br />

NMCD network management category<br />

diagram<br />

NMF network management function<br />

NMIRS network management interface<br />

requirements specification<br />

NML NATO Maturity Levels<br />

NMP network management plan<br />

NMS network management system<br />

NMS navigation management system<br />

NNEC NATO NEC<br />

NNEW NextGen Network Enabled Weather<br />

(FAA)<br />

NOAA National Oceanic and Atmospheric<br />

Administration (U.S.)<br />

NOC network operations center<br />

NOC note of change<br />

NOCAR North Atlantic oceanic concept<br />

and requirements<br />

NOCC National Operational Control Center<br />

NO COM no communication<br />

NOI notice of inquiry (FCC)<br />

NOPAC North Pacific<br />

NORAD North American Aerospace<br />

Defense Command<br />

NOTAM notice to airmen<br />

NOTUS notice to users (ARINC)<br />

NPA non-precision approach<br />

NPDU network protocol data unit<br />

NPIAS national plan for integrated<br />

airport systems<br />

NPR national performance review<br />

NPRM notice of proposed rule making<br />

NR network router<br />

NRP national route program<br />

NRD network routing domain<br />

NRZ non-return to zero<br />

NS network service<br />

NSA National Security Agency (U.S.)<br />

NSAP network service access point<br />

NSC network service center<br />

NSDU network service data unit<br />

NSEL NSAP selection<br />

NSEU neutron single event upset<br />

NSSL National Severe Storms Laboratory<br />

NTDA NEXRAD Turbulence Detection<br />

Algorithm<br />

NTIA National Telecommunications and<br />

Information Administration (U.S.)<br />

NTF no trouble found<br />

NTSB National Transportation Safety<br />

Board (U.S.)<br />

NTST National Television Systems<br />

Committee<br />

NUI network user identification<br />

NUP NEAN update program<br />

NVCD night vision cueing and display<br />

NVIS night vision imaging system<br />

NVM non-volatile memory<br />

NVRAM non-volatile RAM<br />

NVS National Airspace System Voice<br />

Switch (FAA)<br />

NWS National Weather Service (U.S.)<br />

O<br />

O-QAR optical quick access recorder<br />

O&M operations and maintenance<br />

O&S operating and support<br />

OAC oceanic area control center<br />

OAS oceanic automation system<br />

OASIS operational area satellite<br />

information system<br />

OASIS operational and supportability<br />

implementation system<br />

OASIS organic airborne and surface<br />

influence sweep<br />

OASYS obstacle avoidance system<br />

OAT operational acceptance test<br />

OAT outside air temperature<br />

OATS orbit and attitude tracking system<br />

OBP operational build plan<br />

OBS omnibearing selector<br />

OBS optical bypass switch<br />

OCA oceanic control area<br />

OCC occasionally connected computing<br />

OCC operations control center<br />

OCD oceanic clearance delivery<br />

OCIG Oceanic Communications<br />

Improvement Group<br />

OCP oceanic clearance processor<br />

OCTAS obstacle cable and terrain<br />

avoidance system<br />

ODA open document architecture<br />

ODAPS oceanic display and planning<br />

system<br />

ODIAC operational requirements for ATM<br />

air/ground data communications<br />

(Eurocontrol)<br />

ODID operational display and input<br />

development<br />

ODL oceanic data link<br />

ODL optical data link<br />

OEM original equipment manufacturer<br />

OEP Operational Evolution Partnership<br />

(FAA)<br />

OES Office of Emergency Services<br />

OEU overhead electronics unit<br />

OFDM orthogonal frequency division<br />

multiplexing<br />

OFDPS oceanic flight data processing<br />

system<br />

OFP operational flight program<br />

OGE operational ground equipment<br />

OHA operational hazard assessment<br />

OHSC overhead stowage compartments<br />

OHU overhead unit (HUD)<br />

OID object identifier<br />

OIG Office of Inspector General<br />

OIT onboard information terminal<br />

www.avtoday.com/av December 2008 Avionics Magazine 37

---

Aerospace Acronym <strong>Guide</strong> •••<br />

OJT on-the-job training<br />

OLAN onboard local area network<br />

OLDI on-line data interchange<br />

OLED organic LED<br />

OM outer marker<br />

OMB Office of Management and Budget<br />

(U.S.)<br />

OMS onboard maintenance system<br />

OMT object modeling technique<br />

OMT onboard maintenance terminal<br />

ONR Office of Naval Research (U.S.)<br />

OOA object-oriented analysis<br />

OOD object-oriented design<br />

OODA observe, orient, decide and act<br />

OOOI out/off/on/in<br />

OPA operational performance<br />

assessment<br />

OPAS overhead panel ARINC 629 system<br />

OPBC overhead panel bus controller<br />

OPD Optimized Profile Descent<br />

OPS operations<br />

OPS OPS per second<br />

OPSPECS OPS specifications<br />

OPU overspeed protection unit<br />

OR operational requirements<br />

ORB object request broker<br />

ORD operational requirements document<br />

ORD operations readiness demonstration<br />

OS open service<br />

OS operating system<br />

OSA operational safety assessment<br />

OSCAR Orbiting Satellite Carrying<br />

Amateur Radio<br />

OSDS oceanic systems development<br />

support<br />

OSE open systems environment<br />

OSED operational service and<br />

environment definition<br />

OSEIC operational service and<br />

environment information capture<br />

OSI open systems interface/<br />

interconnection<br />

OSIE OSI environment<br />

OSI-RM OSI-reference model<br />

OSJTF Open Systems Joint Task Force<br />

(U.S.)<br />

OSPF open shortest path first<br />

OSR order status report<br />

OSRVT One System Remote Video Terminal<br />

OTA Office of Technology Assessment<br />

(U.S.)<br />

OT&E operational test and evaluation<br />

OTFP operational traffic flow planning<br />

OTH over the horizon<br />

OTP Office of Telecommunications<br />

Policy (U.S.)<br />

OTS off the shelf<br />

OVHT overheat<br />

P<br />

P2FEP PETAL-II front-end processor<br />

P3I preplanned product improvements<br />

P-Code GPS precision code<br />

P-DME precision DME<br />

P-RNAV precision area navigation<br />

P/F poll/final<br />

P/RST press to reset<br />

PA passenger address<br />

PA power amplifier<br />

PABX private automatic branch<br />

exchange<br />

PAC path attenuation compensation<br />

PACIS passenger address and communication<br />

interphone system<br />

PAD packet assembler-disassembler<br />

PAL programmable array logic<br />

PAM pulse amplitude modulation<br />

PAMRI peripheral adapter module<br />

replacement item<br />

PANS-OPS procedures for air navigation<br />

services-aircraft operations<br />

PAPD precise and accurate positioning<br />

device<br />

PAR precision approach radar<br />

PAT process action team<br />

PATS portable avionics test solution<br />

PAU passenger address unit<br />

PAVES programmable audio video entertainment<br />

system<br />

PAWES performance assessment and<br />

workload evaluation<br />

PAX passenger<br />

PBD place bearing/distance (waypoint)<br />

PBID post burn-in data<br />

PBN performance-based navigation<br />

PBX public/private branch exchange<br />

PC personal computer<br />

PC printed circuit<br />

PCA physical configuration audit<br />

PCB printed circuit board<br />

PCC pilot controller communication<br />

PCD panoramic cockpit display<br />

PCI peripheral component interface<br />

(32-bit local bus)<br />

PCI protocol control information<br />

PCM pulse code modulation<br />

PCMIA personal computer memory card<br />

interface association<br />

PCO protocol converter unit<br />

PCU passenger control unit<br />

PCU personal control unit<br />

PCU power control unit<br />

PCU program coordination office<br />

PD profile descent<br />

PDA personal digital assistant<br />

PDB performance data base<br />

PDC pre-departure clearance<br />

PDCU panel data concentrator unit<br />

PDD package design document<br />

PDDI product definition data interface<br />

PDF primary display function<br />

PDL program design language<br />

PDM predefined controller text message<br />

PDM project development manager<br />

PDN public data network<br />

PDOP position dilution of precision<br />

PDR preliminary design review<br />

PDS persistent data storage<br />

PDS primary display system<br />

PDU protocol data unit<br />

PE precision engagement<br />

PECT peer entity contact table<br />

PED portable electronic device<br />

PEO C3T Army Program Executive Office<br />

Command, Control and Communications<br />

Tactical<br />

PER packed encoding rule<br />

PERT program evaluation and review<br />

technique<br />

PETAL preliminary Eurcontrol test of air/<br />

ground data link<br />

PF pilot flying<br />

PF power factor<br />

pFAST passive final approach spacing tool<br />

PFC primary flight computer<br />

PFCS primary flight control system<br />

PFD primary flight display<br />

PHARE Program for Harmonized ATM<br />

Research in Europe (Eurocontrol)<br />

PHI Petroleum Helicopters Inc.<br />

PHY physical<br />

PI parameter identifier<br />

PICMG PCI Industrial Computer Manufacturers<br />

Group<br />

PIA performance, integrity and availability<br />

PICS protocol implementation conformance<br />

statements<br />

PID parameter identifier<br />

PID pilot information display<br />

PID primitive identifier<br />

PID process ID<br />

PIM programmable infosec module<br />

PIP product improvement program<br />

PIREP pilot report<br />

PL parameter length<br />

PL project leader<br />

PLA power lever angle<br />

PLB personal locator beacon<br />

PLBT personal locator beacon and<br />

voice transceiver<br />

PM program manager<br />

PM phase modulation<br />

PMA parts manufacturer approval<br />

PMA parts manufacturer authority<br />

PMA permanent magnet alternator<br />

PMAT portable maintenance access<br />

terminal<br />

PMC provisional memory cover<br />

PMC PCI mezzanine card<br />

PMG permanent magnet generator<br />

PMOS p-type metal oxide semiconductor<br />

PMP project/program management plan<br />

PMS performance management system<br />

38 Avionics Magazine December 2008 www.avtoday.com/av

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••• Aerospace Acronym <strong>Guide</strong><br />

PN pseudo noise<br />

PNCS performance navigation<br />

computer system<br />

PND primary navigation display<br />

PNF pilot not flying<br />

PNR point of no return<br />

PO part of<br />

POA plain old ACARS<br />

POC point of contact<br />

POC proof of concept<br />

POCC project operations control center<br />

POH pilot’s operating handbook<br />

POM program objective memorandum<br />

POP point of presence<br />

POR Pacific Ocean region<br />

POSIX portable operating system interface<br />

POTS plain old telephone system/service<br />

PPA production preparation agreement<br />

PPDU physical layer protocol data unit<br />

PPI planned position indicator<br />

PPL processor-to-processor link<br />

PPM pages per minute<br />

PPM parts per million<br />

PPM pulse position modulation<br />

PPP point-to-point protocol<br />

PPS packets per second<br />

PPS precise positioning service<br />

PPS pulse per second<br />

PRAIM predictive RAIM<br />

PRF pulse repetition frequency<br />

PRI primary rate interface<br />

PRM precision runway monitor<br />

PRM-A Precision Runway Monitor-Alternate<br />

(FAA)<br />

PROM programmable ROM<br />

PRN pseudo random noise<br />

PRS public regulated service<br />

PRSOV pressure regulating and shutoff valve<br />

PS power supply<br />

PSA PS assembly<br />

PSD port sharing device<br />

PSDN packet switched data network<br />

PSE packet-switching exchange<br />

PSEU proximity sensor electronic unit<br />

PSL projected service life<br />

PSL/PSA problem statement language/<br />

problem statement analyzer<br />

PSM power supply modules<br />

PSN packet switching network<br />

PSPL preferred standard parts list<br />

PSR primary surveillance radar<br />

PSS proximity sensor system<br />

PSSA preliminary system safety<br />

assessment<br />

PSTN public switched telephone network<br />

PSU passenger service unit<br />

PT plane talk<br />

PTAN precision terrain aided navigation<br />

PTD performance test domain<br />

PTI packet type identifier<br />

PTM peripheral transition module (I/O<br />

interface for SBC)<br />

PTR production test requirements<br />

PTS problem tracking system<br />

PTSD production test specification<br />

document<br />

PTT push to talk<br />

PTU power transfer unit<br />

PV parameter value<br />

PV photovoltaic<br />

PVC permanent virtual circuit<br />

PVD plan view display<br />

PVT position, velocity, time<br />

PWM pulse-width modulation<br />

PWR Power<br />

PXI PCI extensions for instrumentation<br />

Q<br />

QA quality assurance<br />

QAP QA plan<br />

QAR quick access recorder<br />

QDR quality defect report<br />

QDR quality deficiency report<br />

QEC quadrantral error corrector<br />

QFE Q code, field elevation pressure<br />

QM quality management<br />

QMP QM plan<br />

QMS QM system<br />

QNH sea level pressure<br />

QNT quint networking technology<br />

QOP quality operating procedures<br />

QPL qualified product list<br />

QRH quick reference handbook<br />

QOS quality of service<br />

QP quality procedure<br />

QT qualification test<br />

QVL qualified vendor list<br />

R<br />

R-CDL Radar Common Data Link<br />

R/W read/write<br />

R&D research and development<br />

R&M reliability and maintainability<br />

RA radio altitude<br />

RA resolution advisories<br />

RA routing area<br />

RAA Regional Airline Association<br />

RAAF Royal Australian Air Force<br />

RAAS runway awareness and advisory<br />

system<br />

RAC-GAT Russian/American Coordinating<br />

Group for Air Traffic Control<br />

RAC runway analysis chart<br />

RAD rapid application development<br />

RAE Royal Aircraft Establishment<br />

(Farnborough)<br />

RAF requirements analysis folder<br />

RAF Royal Air Force (U.K.)<br />

RAI radio altimeter indicator<br />

RAID redundant arrays of independent<br />

disks<br />

RAIM receiver autonomous integrity<br />

monitoring<br />

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www.avtoday.com/av December 2008 Avionics Magazine 39

---

Aerospace Acronym <strong>Guide</strong> •••<br />

RALA request automatic line adapter<br />

RALT radar altimeter<br />

RAM random access memory<br />

RAMICS rapid airborne mine clearance<br />

system<br />

RAP required automation performance<br />

RAS route area statistics (IATA)<br />

RATMP required air traffic management<br />

performance<br />

RBT reference business trajectory<br />

RCAG remote control air-to-ground<br />

RCAT Reconfigurable Cockpit and Avionics<br />

Testbed<br />

RCD radar cable detection<br />

RCE radio control equipment<br />

RCF required communications<br />

performance<br />

RCL radio communications link<br />

RCO remote communications outlet<br />

RCP radio control panel<br />

RCR routing and circuit restoral<br />

RCSU remote control and status unit<br />

RCU radio control unit<br />

RCU remote control unit<br />

RC&W rack connectors and wiring<br />

RD (taxi) route deviation<br />

RD routing domain<br />

RDARA regional domestic air route area<br />

RDC routing domain confederation<br />

RDDMI radio digital distance magnetic<br />

indicator<br />

RDF RD format<br />

RDI radio direction indicator<br />

RDI RD identifier<br />

RDP radar data processing<br />

RDR radar<br />

RDSS radio determination satellite system<br />

RDT&E research, development, test and<br />

evaluation<br />

REA radar electronics assembly<br />

RE&D research, engineering and<br />

development<br />

REDAC Research, Engineering and Development<br />

Advisory Committee (FAA)<br />

REP required environmental<br />

performance<br />

RERB reliability enhancement and reengining<br />

program<br />

REQ request<br />

RER residual error rate<br />

REVS radar-enhanced vision system<br />

RF radio frequency<br />

RFC request for comments<br />

RFG requirement focus group<br />

RFI radio frequency interference<br />

RFI request for information<br />

RFID radio frequency identification<br />

RFO request for offer<br />

RFP request for proposal<br />

RFQ request for quote<br />

RFU radio frequency unit<br />

RGB red green blue<br />

RGCSP Review of the General Concept of<br />

Separation Panel (ICAO)<br />

RGS relay ground station<br />

RH radio handler<br />

RHF ridiculously high frequency<br />

RHO response on handoff<br />

RHSM reduced horizontal separation<br />

minima<br />

RI runway incursion<br />

RIB routing information base<br />

RIN Royal Institute of Navigation (U.K.)<br />

RIP routing information protocol<br />

RISC reduced instruction set computer<br />

RLE response on link establishment<br />

RLG ring laser gyro<br />

RLS reliable link service<br />

RM regional manager<br />

RM&A reliability, maintainability and<br />

availability<br />

RMCDE radar message conversion and<br />

distribution equipment<br />

RMI radio magnetic indicator<br />

RMMS remote maintenance monitoring<br />

system<br />

RMP risk management plan<br />

RMS risk management system<br />

RMS root mean square<br />

RNAV area navigation<br />

RNP required navigation performance<br />

RNR receive not ready<br />

RO radio operator<br />

ROA recognized operating agency<br />

ROC rate of climb<br />

ROC rest of operational capability<br />

ROD rate of descent<br />

ROIP radio over Internet protocol<br />

ROM read only memory<br />

ROM rough order of magnitude<br />

RON remain over night<br />

RP routing protocol<br />

RPDE rapid preliminary development<br />

effort<br />

RPG rocket-propelled grenade<br />

RPK revenue passenger kilometers<br />

RPM revolutions per minute<br />

RPOA Recognized Private Operation<br />

Agency (CCITT)<br />

RR receive ready<br />

RRI router reference implementation<br />

RSDP reliable sequencing deliveryconfirmation<br />

protocol<br />

RSN regional sub-network<br />

RSP required surveillance<br />

performance<br />

RSSI received signal strength indicator<br />

RT radio telecommunication<br />

RTA required time of arrival<br />

RTB rocket-towed barrier<br />

RTC red time clock<br />

RTCA Radio Technical Commission for<br />

Aeronautics (U.S.)<br />

RTCM Radio Technical Commission for<br />

Maritime Services<br />

RTD resistance temperature detector<br />

RTK real-time kinematic<br />

RTM radio transmission module<br />

RTO rejected takeoff<br />

RTOS real time operating system<br />

RTR remote transmitter receiver site<br />

RTS request to send<br />

RTSP required total system performance<br />

RTTI run-time type identification<br />

RTU radio tuning unit<br />

RU rack unit (1 inch)<br />

RVP required vision performance<br />

RVR runway visual range<br />

RVSM reduced vertical separation<br />

minimum<br />

RWM R/W memory<br />

RWP required weather performance<br />

RWR radar warning receiver<br />

RX receiver<br />

RZ return to zero<br />

S<br />

S0 Segment 0<br />

S1 Segment 1<br />

S&A sense-and-avoid<br />

SA selective availability<br />

SA situational awareness<br />

SAAAR special aircraft and aircrew<br />

authorization required<br />

SAASM selective availability/anti-spoofing<br />

module<br />

SAASM/EGI SAASM/embedded GPS inertial<br />

system<br />

SAD software architecture document<br />

SADT software architecture design team<br />

SAE Society of Automotive Engineers<br />

SAFIR systems aid for integration and<br />

fault reporting<br />

SAI system architecture and interfaces<br />

SAI System Architecture and Interfaces<br />

Subcommittee (AEEC)<br />

SAM slot allocation management<br />

SAM South American region<br />

SAMM surface area movement<br />

management<br />

SAMPE Society for the Advancement of<br />

Materials and Process Equipment<br />

SAP service access points<br />

SAR search and rescue<br />

SAR synthetic aperture radar<br />

SARPS standards and recommended<br />

practices (ICAO)<br />

SAS stability augmentation system<br />

SAS station address set<br />

SASS surveillance analysis support<br />

system (Eurocontrol)<br />

SAT static air temperature<br />

SAT systems and acceptance testing<br />

SATCOM satellite communications<br />

SATNAV satellite navigation<br />

SB service bulletin<br />

SBAS satellite-based augmentation<br />

system<br />

SBC single board computer<br />

SBD schematic block diagram<br />

40 Avionics Magazine December 2008 www.avtoday.com/av

---

••• Aerospace Acronym <strong>Guide</strong><br />

SBD short data burst<br />

SC special committee (RTCA)<br />

SCA self-contained approaches<br />

SCA software communications architecture<br />

SCAP standard computerized airplane<br />

performance<br />

SCAT special category<br />

SCCI system controller and cockpit<br />

indicator<br />

SCD system category diagram<br />

SCE super-conducting electronics<br />

SCPC single carrier per channel<br />

SCSI small computer system interface<br />

SD secure digital<br />

SDD system/software design document<br />

SDD system development and demonstration<br />

SDDN software-defined data network<br />

SDF software development folder<br />

SDI source destination identifier<br />

SDL software data loader<br />

SDLC synchronous data link control<br />

SDM software development methodology<br />

SDP software development plan<br />

SDR software defined radio<br />

SDR system design review<br />

SDRAM synchronous dynamic random<br />

access memory<br />

SDR software-defined radio<br />

SDU satellite data unit<br />

SE systems engineering<br />

SEC aircraft information security<br />

(AEEC)<br />

SEC software enabled control<br />

SECAM sequential color with memory<br />

SEI Software Engineering Institute<br />

SEL select identifier<br />

SELCAL selective calling<br />

SEMP system engineering management<br />

plan<br />

SESAR Single European Sky Air Traffic<br />

Management Research program<br />

(Eurocontrol)<br />

SETA system engineering and technical<br />

assistance (contractor)<br />

SE-Vision synthetic-enhanced vision<br />

SEWG security working group<br />

SFAR special federal regulation<br />

SFDF subsystem fault detection function<br />

SFE supplier (or seller)-furnished<br />

equipment<br />

SFT software fault tolerance<br />

SICAS secondary surveillance radar<br />

improvements and collision<br />

avoidance systems<br />

SICASP SICAS Panel (ICAO)<br />

SID standard instrument departure<br />

SIGINT signals intelligence<br />

SIGMET significant meteorological information<br />

SIL surveillance integrity level<br />

SINCGARS single-channel ground and<br />

airborne radio system<br />

SI&T software integration and test<br />

SISG Systems Implementation<br />

Subgroup (IATA)<br />

SIT system integration and test<br />

SITA Societe Internationale de Telecommunications<br />

Aeronautiques<br />

SITD system integration test description<br />

SITP system integration test plan<br />

SITP/D SITP/description<br />

SITR system integration test report<br />

SIU server interface unit<br />

SIWG seat integration<br />

SJU SESAR Joint Undertaking<br />

SKT station-keeping technology<br />

SLA service level agreement<br />

SLC synchronous link control<br />

SLH system level health<br />

SLI system level interface<br />

SLM standard length message<br />

SLoC source lines of code<br />

SLS satellite landing system<br />

SLUC system level use case<br />

SLV service level verifier<br />

SM systems management<br />

SMA surface movement advisor<br />

SMART standard modular avionics repair<br />

and test<br />

SMB serial mezzanine board<br />

SMC Space and Missile Systems<br />

Center (Air Force)<br />

SMD standardized microcurcuit drawing<br />

SMD surface mount device<br />

SMDS switch multimegabit data service<br />

SME system management entity<br />

SMGCS surface movement guidance and<br />

control systems<br />

SMI standard message identifier<br />

SMR simulator maintainability and<br />

reliability<br />

SMR specialized mobile radio<br />

SMR surface movement radar<br />

SMS short messaging service<br />

SMS spectrum monitoring system<br />

SMT standard message text<br />

SMU sensor management unit<br />

SMUG stores management upgrade<br />

system<br />

SN subnetwork<br />

SNA system network architecture<br />

SNAC SN access<br />

SNCR SN connection reference<br />

SNDCF SN dependent convergence function<br />

SNDCF/P SNDCF/protocol<br />

SNICF SN independent convergence<br />

function<br />

SNLE SN link establishment<br />

SNMP simple network management<br />

protocol<br />

SNMPv1 SNMP version 1<br />

SNPA SN point of attachment<br />

SNPDU SN protocol data unit<br />

SNR signal-to-noise ratio<br />

SNSDU SN service data unit<br />

SOC system on a chip<br />

SOH start of header<br />

SOI system operator instructions<br />

SOIA simultaneous offset instrument<br />

approach<br />

SOM software operator manual<br />

SOIT satellite operational implementation<br />

team<br />

SON statement of operational need<br />

SOSCOE System-Of-Systems Common<br />

Operating Environment<br />

SOW statement of work<br />

SP signal processing<br />

SPAR Survivability Planner Associate<br />

Re-router<br />

SPEAR system performance evaluation<br />

and analysis reporting<br />

SPCR system problem/change report<br />

SPI serial peripheral interface<br />

SPICE STANS preparation integrator for<br />

CNS/ATM environment (Eurocontrol)<br />

SPM software programmer’s manual<br />

SPO system program office<br />

SPR safety and performance<br />

requirements<br />

SPS software product specification<br />

SPS standard positioning service<br />

SPS stratospheric platform system<br />

SPTF Spectrum Policy Task Force<br />

SQ service quality<br />

SQAP software quality assurance plan<br />

SQB SQ/billing processor<br />

SQD SQ data<br />

SQP signal quality parameter<br />

SRAM static random access memory<br />

SREJ selective reject<br />

SRM selective reject mode<br />

SRM systematic risk management<br />

SRR system/software requirements<br />

review<br />

SRS software requirements specification<br />

SRTM shuttle radar topography mission<br />

SRU shop replaceable unit<br />

SRW Soldier Radio Waveform<br />

SSA source selection activity<br />

SSA system safety assessment<br />

SSAC source selection advisory committee<br />

SSAP strategic safety action plan<br />

SSB single side band<br />

SSDD system/segment design<br />

document<br />

SSEB source selection evaluation board<br />

SSOI sidestick order indicator<br />

SSR secondary surveillance radar<br />

SSS surveillance server system<br />

SSS system/segment specification<br />

SSU subsequent signal unit<br />

STANAG standardization agreement<br />

STANS simulation for a total air navigation<br />

system (Eurocontrol)<br />

STAP space-time adaptive processing<br />

STAR standard terminal arrival route<br />

STARS standard terminal automation<br />

replacement system (FAA)<br />

STB systems test bed<br />

www.avtoday.com/av December 2008 Avionics Magazine 41

---

Aerospace Acronym <strong>Guide</strong> •••<br />

STC supplemental type certificate<br />

(FAA)<br />

STCA short-term traffic advisory<br />

STD standard<br />

STD system technical description<br />

STDMA self-organized time division<br />

multiple access<br />

STDMA synchronized time division<br />

multiple access<br />

STF SATCOM tracking facility<br />

STIU satellite telecommunications<br />

intermediate unit<br />

STK Scandinavian Surveillance<br />

Office<br />

STM serial transition module<br />

STOL short takeoff and landing<br />

STOVL short takeoff/vertical landing<br />

STP system test plan<br />

STP/D STP/description<br />

STR system technical report<br />

STR system test report<br />

STVS small tower voice switch<br />

STX start of text<br />

SU signal unit<br />

SUA special use airspace<br />

SUM software user manual<br />

SUPPS regional supplementary<br />

procedures<br />

SUT system under test<br />

SVC switched virtual circuit<br />

SvRR service readiness review<br />

SVS synthetic vision system<br />

SVU satellite voice unit<br />

SW software<br />

SWIM System Wide Information Management<br />

(FAA)<br />

SWIT software integration and test<br />

SWIT switched virtual circuit<br />

SWTP software technology plan<br />

SWTRR software test readiness review<br />

SYS system identifier<br />

SYSCAT-B system category-B (FAA message<br />

format)<br />

SysCI system configuration item<br />

SysDD system design document<br />

T<br />

T-PED transmitting portable electronic<br />

device<br />

T&E test and evaluation<br />

TA traffic advisory (TCAS)<br />

TAA technical advanced aircraft<br />

TACAN tactical air navigation<br />

TAF terminal aerodrome forecast<br />

TAF terminal area forecast (ICAO)<br />

TAIC transport accident investigation<br />

commission<br />

TAIS total airport management system<br />

TAMD theater air and missile defense<br />

TAOARC Terminal Area Operations <strong>Aviation</strong><br />

Rulemaking Committee (FAA)<br />

TAR trials ATN router<br />

TAP tower automation program<br />

TAS traffic advisory system<br />

TASS terminal air surveillance system<br />

TAT total air temperature<br />

TAWS terrain avoidance warning system<br />

TC transport connection<br />

TCA terminal control area<br />

TCAD traffic collision alerting device<br />

TCAS traffic alert collision avoidance<br />

system<br />

TCAS II traffic alert collision avoidance<br />

system II<br />

TCC turbine clearance control<br />

TCDL tactical common data link<br />

TCP transmission control protocol<br />

TCP/IP TCP/Internet protocol<br />

TCS tower communications system<br />

TD technical documentation<br />

TDF training device facility requirements<br />

TDLS tower data link services (system)<br />

TDM time division multiplexed<br />

TDMA time division multiple access<br />

TDOA time difference of arrival<br />

TDST tower data services terminal<br />

TDWR terminal Doppler weather radar<br />

TECOM technical committee<br />

TEDS transducer electronic data sheet<br />

TEI text element identifiers<br />

TELCO telephone company<br />

TEN-T trans-European network-transport<br />

TERCOM terrain contour matching<br />

TERPS terminal en route procedures<br />

TERPS terminal instrument procedures<br />

TES tactical exploitation system<br />

TES trials end system (for ATN)<br />

TESCOS terminal coordination system<br />

TFC traffic<br />

TFM traffic flow management<br />

TFM-M Traffic Flow Management Modernization<br />

(FAA)<br />

TFR temporary flight restriction<br />

TFTP trivial file transfer protocol<br />

TG transmission gate<br />

TG4 maximum time between GSIF’s<br />

timer<br />

TG5 maximum link overlap timer TGT<br />

target<br />

TIA Telecommunications Industry<br />

Association<br />

TIF traffic information file<br />

TIP tower integrated program<br />

TIS traffic information service<br />

TIS traffic information system<br />

TIS-B traffic information service-broadcast<br />

TL terminal location (ACARS/AFEPS)<br />

TLS target level of safety<br />

TM technical manual<br />

TMA traffic management advisor<br />

TMC traffic management coordinator<br />

TMC test, monitor and control<br />

TMOS TSAT Mission Operations System<br />

TM&O telecommunications management<br />

and operations<br />

TMLLF terrain masking low-level flight<br />

TMMAC tactical airborne moving map<br />

capability<br />

TMS-T traffic management system<br />

transition<br />

TMU traffic management unit<br />

TO technical order<br />

TOC transfer of communications<br />

TOFT tactical operational flight trainer<br />

TO/GA take off/go around<br />

TOR terms of reference (ICAO/FAA)<br />

TOW takeoff weight<br />

TP test point<br />

TP4 transport protocol class 4<br />

TPA taxi positional awareness<br />

TPAW turbulence prediction and warning<br />

system<br />

TPDU transport protocol data unit<br />

TPF transaction processing facility<br />

TPL terminal permission list<br />

TPM technical performance management<br />

TPU terminal processing units<br />

TQM total quality management<br />

TRACON terminal radar approach control<br />

TRB technical review board<br />

TRD transit routing domain<br />

TRNS terrain referenced navigation<br />

system<br />

TRR test readiness review<br />

Honeywell TCAS display<br />

TS time source<br />

TS transport service<br />

TSA technical services agreement<br />

TSA temporary segregated areas<br />

TSA Transportation Security<br />

Administration (U.S.)<br />

TSAP transport service access point<br />

TSAT Transformational Satellite Communications<br />

System<br />

TSB Transportation Safety Board<br />

TSC term service commitment<br />

TSC transportation system center<br />

TSDP technical support and data packages<br />

TSDU transport service data unit<br />

TSG technical subgroup<br />

TSG technical standards and<br />

guidelines<br />

42 Avionics Magazine December 2008 www.avtoday.com/av

---

••• Aerospace Acronym <strong>Guide</strong><br />

TSO technical standard order (FAA)<br />

TSP transmitted signal power<br />

TSS technology support and services<br />

TSPD technical support and data<br />

package<br />

TSTM time source transition module<br />

TT test tools<br />

TTG time to go<br />

TTL transistor-transistor logic<br />

TTNT tactical targeting networking<br />

technology<br />

TTP time-triggered protocol<br />

TTS time to station<br />

TTW time to waypoint<br />

TUAV tactical unmanned aerial vehicle<br />

TURB turbulence<br />

TVE total vertical error<br />

TWDL two-way data link communications<br />

TWIP terminal weather information for<br />

pilots<br />

TWP technical work program<br />

TX transmit<br />

U<br />

UA unmanned aircraft<br />

UA unnumbered acknowledgment<br />

UART universal asynchronous receiver<br />

transmitter<br />

UAS unmanned aircraft system<br />

UAT universal access transceiver<br />

General Atomics MQ-1C Sky Warrior UAS<br />

UATP universal air travel plan<br />

UAV unmanned aerial vehicle<br />

UBI uplink block identifier<br />

UCAV unmanned combat aerial vehicle<br />

UCD universal cockpit display<br />

UCI user computer interface<br />

UD user data<br />

UDF unducted fan<br />

UDP user datagram protocol<br />

UHF ultra-high frequency<br />

UI unnumbered information<br />

UIR upper information region<br />

UL uplink<br />

ULV ultra-low voltage<br />

ULWG upper layer working group<br />

UML unified modeling language<br />

UMTS universal mobile telecommunications<br />

system<br />

UP universal platform<br />

UPRM universal platform resource<br />

management<br />

UPS uninterruptible power supply<br />

UPSMS UPS management supply<br />

URET user request evaluation tool<br />

URL universal resource locator<br />

USB universal serial bus<br />

USC United States code<br />

USCG U.S. Coast Guard<br />

UTC universal time coordinated<br />

UTP unshielded twisted pair<br />

UV ultraviolet<br />

UUT unit under test<br />

UWB ultra wide-band<br />

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www.avtoday.com/av December 2008 Avionics Magazine 43

---

Aerospace Acronym <strong>Guide</strong> •••<br />

V<br />

V volt<br />

VITA VMEbus International Trade<br />

Group<br />

V/ULOS versions of the HaveQuick and<br />

VHF/UHF line of sight<br />

V&V verification and validation<br />

VAC volts alternating current<br />

VAD Visual Acquisition Disrupter<br />

VAM value-added manufacturer<br />

VANS value-added network services<br />

VAR value-added reseller<br />

VAP value-added processor<br />

VAS value-added services<br />

VASI visual approach slope indicator<br />

VBV variable bleed valve<br />

VC virtual circuit<br />

VCB virtual circuit bridge<br />

VCDU video control display unit<br />

VCP video cassette player<br />

VCU VDL control unit<br />

VDC volts direct current<br />

VDD version description document<br />

VDGS visual docking guidance system<br />

VDL VHF data link<br />

VDL4 VHF Data Link Mode 4<br />

VDLM2 VDL Mode 2<br />

VDLM3 VDL Mode 3<br />

VDLM4 VDL Mode 4<br />

VDR VHF data radio<br />

VDU visual display unit<br />

VEE visual engineering environment<br />

VER version<br />

VFD virtual flight deck<br />

VFR visual flight rules<br />

VGA video graphics adapter<br />

VGA video graphics array<br />

VG/DG vertical gyro/directional gyro<br />

VGS VDLM2 ground station<br />

VHF very high frequency<br />

VHSIC very high speed integrated circuit<br />

VIA versatile integrated avionics<br />

VIP verbal intruder positioning<br />

VLJ very light jet<br />

VLSI very large scale integration<br />

VMC vehicle management computer<br />

VMC visual meteorological conditions<br />

VMD video motion detection<br />

VME versa module Eurocard bus<br />

VME VHF management entity (VMEbus)<br />

VMECC versa module Eurocard card cage<br />

VMON VNMS health monitoring<br />

VMS vehicle management system<br />

VNAV vertical navigation<br />

VNE never-exceed speed<br />

VNMS VDLM2 network management<br />

system<br />

VNO maximum structural cruising<br />

speed<br />

VOCRAD voice radio<br />

VOIP voice over Internet protocol<br />

VOR VHF omnidirectional radio range<br />

VPN virtual private network<br />

Embraer Phenom 100 VLJ<br />

VPT virtual procedure trainer<br />

Vr 157 knots<br />

VR rotation speed<br />

VREF approach reference speed<br />

VRG VDL reference guide<br />

VSAT very small aperture terminal<br />

VSCS voice switching and control<br />

system<br />

VSD VDL specific DTE address<br />

VSM vertical separation minimum<br />

VSRS voice switch replacement system<br />

VSTC validation of supplemental type<br />

certificate<br />

VSWR voltage standing wave radio<br />

VTAM virtual telecommunications<br />

access method<br />

VTAS voice, throttle and stick<br />

VTOL vertical takeoff and landing<br />

VTS vessel traffic system<br />

VUIT-2 Video from Unmanned Aerial<br />

Systems for Interoperability<br />

Teaming Level II<br />

W<br />

WAAS wide area augmentation system<br />

WACS wireless airport communication<br />

system<br />

WADGPS wide area differential GPS<br />

WAEA World Airline Entertainment<br />

Association<br />

WAFC world area forecast center<br />

WAN wide area network<br />

WARC World Administrative Radio<br />

Conference<br />

WARP weather and radar processor<br />

WAS wide area search<br />

WASP wireless access service point<br />

WATRS west Atlantic route structure<br />

WBS weight balance system<br />

WBS work breakdown structure<br />

WC waypoint capture<br />

WDM wavelength division multiplexed<br />

WDM LAN wavelength division multiplexed<br />

local area network<br />

WG working group<br />

Wi-Fi wireless fidelity<br />

WGS world geodetic system<br />

Wilco will comply<br />

WIN-T Warfighter Information Network<br />

WINN Weather Information Network<br />

WIP wide area augmentation system<br />

integrity panel<br />

WIPPS wide-body integrated platform<br />

protection system<br />

WJHTC William J. Hughes Technical<br />

Center (FAA)<br />

WLG wireless ground-link<br />

WMO World Meteorological Organization<br />

WMSCR weather message switching<br />

center replacement<br />

WNW wideband networking waveform<br />

WORM write-once/read many (optical<br />

disk technology)<br />

WP work procedure<br />

WPR waypoint position report<br />

WPT waypoint<br />

WQAR wireless quick access recorder<br />

WRC World Radiocommunication<br />

Conference<br />

WS windshear<br />

WSDDM weather support for deicing<br />

decision-making<br />

WSR weather surveillance radar<br />

WTMD Wake Turbulence Mitigation for<br />

Departures (FAA)<br />

WWG wireless working group<br />

WX weather<br />

WXR weather radar<br />

X<br />

X cancel<br />

XID exchange identification<br />

XFR transfer<br />

XL-ETFE cross-linked ethylene<br />

tetraflourothylene<br />

XMC switched fabric mezzanine card<br />

XMIT transmit<br />

XMTR transmitter<br />

XPDR transponder<br />

XTI X-open transport interface<br />

XTP express transfer protocol<br />

XTRA X-ban thin radar aperture<br />

XWIND crosswind<br />

Z<br />

Zulu (Greenwich mean time)<br />

ZFW zero fuel weight<br />

ZOC zone of convergence<br />

ZVF zero velocity filter<br />

44 Avionics Magazine December 2008 www.avtoday.com/av