|
|
| A |
|
| 3D,
4D |
three-
or four-dimensional |
| 4096 CODE |
the
octal base, four-digit code used between framing pulses of a reply to
identify an aircraft or for general use and emergency codes (XPD) |
| A |
ampere(s) |
| A |
autotuned
navaid |
| AAC |
aeronautical
administration communications |
| AAC |
airline
administrative communications |
| AAL |
above
aerodome level |
| AAMP |
advanced
architecture microprocessor |
| AATT |
advanced
aviation transportation technology |
| AAS |
advanced
automation system (FAA) |
| A/B |
autobrake |
| ABC |
automatic
brightness control |
| A-BPSK |
aviation
binary phase shift keying |
| AC |
advisory
circular |
| AC |
alternating
current |
| A/C |
aircraft |
| ACAC |
air-cooled
air cooler |
| ACARS |
aircraft
communications addressing and reporting system |
| ACAS |
airborne
collision avoidance system (FAA) |
| ACC |
active
clearance control |
| ACC |
area
control center |
| ACD |
automatic
conflict detection |
| ACE |
actuator
control electronics |
| ACE |
advanced
certification equipment |
| ACIPS |
airfoil
cowl ice protection system |
| ACF |
area
control facility |
| ACK |
acknowledgment |
| ACMF |
airplane
condition monitoring function |
| ACMP |
alternating
current motor pump |
| ACMS |
aircraft
condition monitoring system |
| ACNSS/ |
advanced
communication/navigation/ surveillance system |
| ACP |
audio
control panel |
| ACS |
active
control system |
| ACS |
audio
control system |
| ACT |
active |
| ACTC |
airport
traffic control towers |
| ACTD |
advanced
concept technology demonstration |
| ACU |
apron
control unit |
| ACU |
autopilot
control unit |
| ACU |
antenna
control unit |
| AD |
airworthiness
directives (FAA) |
| A/D |
analog-to-digital |
| ADA |
a
computer programming language |
| ADC |
air
data computer |
| ADF |
automatic
direction finding |
| ADI |
attitude
direction indicator |
| ADIRS |
air
data inertial reference system |
| ADIRU |
air
data inertial reference unit |
| ADL |
aeronautical
data link |
| ADLP |
aircraft
data link processor (Mode S) |
| ADLP |
airborne
data link protocol |
| ADM |
air
data module |
| ADMS |
airline
data management system |
| ADP |
air
driven pump |
| ADR |
address |
| ADR |
alternative
dispute resolution |
| ADRAS |
airplane
data recovery and analysis system |
| ADS |
automatic
dependent surveillance |
| ADS |
air
data system |
| ADS-A |
automatic
dependent surveillance- addressed |
| ADSA |
automatic
dependent surveillance- automation |
| ADS-B |
automatic
dependent surveillance- broadcast |
| ADSEL |
address
selective |
| ADSP |
automatic
dependent surveillance panel |
| ADSSG |
ADS
Study Group (ICAO) |
| ADSU |
automatic
dependent surveillance unit |
| AECU |
audio
electronic control unit |
| AED |
ALGOL
extended for design |
| AEEC |
Airlines
Electronic Engineering Committee (ARINC) |
| AEP |
ARINC
engineering practices |
| AEP |
audio
entertainment player |
| AERA |
automated
en route air traffic control |
| AES |
aircraft
earth station (Inmarsat) |
| AESS |
aircraft
environment surveillance system |
| AF |
airway
facilities |
| AFC |
Aeronautical
Frequency Committee (AEEC) |
| AFC |
automatic
frequency compensation |
| AFC |
automatic
frequency control |
| AFCAS |
automatic
flight control augmentation system |
| AFCS |
automatic
flight control system |
| AFD |
adaptive
flight display |
| AFD |
autopilot
flight director |
| AFDC |
autopilot
flight director computer |
| AFDS |
autopilot
flight director system |
| AFDX |
avionics
full-duplex Ethernet switch |
| AFEPS |
ACARS
front-end processing system |
| AFGCS |
automatic
flight guidance and control system |
| AFI |
authority
format identifier |
| AFIS |
airborne
flight information system |
| AFIS |
automatic
flight information service |
| AFIS |
automated
flight inspection system |
| AFM |
aircraft
flight manual |
| AFN |
air
traffic services facilities notification |
| AFS |
aeronautical
fixed service (ICAO) |
| AFS |
automatic
flight system |
| AFSK |
audio
frequency shift keying |
| AFSS |
automated
flight service stations |
| AFTN |
aeronautical
fixed telecommunications network |
| AFTRCC |
Aerospace
and Flight Test Radio Coordinating Council |
| AFU |
artificial
feel unit |
| A/G |
air/ground;
air to ground |
| AGACS |
automatic
A/G communication system |
| AGAE |
A/G
applications engineering |
| AGATE |
Advanced
General Aviation Transport Experiments (NASA) |
| AGC |
automatic
gain control |
| AGCOS |
A/G
communication services |
| AGCU |
auxiliary
generator control unit |
| AGDL |
A/G
data link |
| AGIS |
A/G
intermediate system |
| AGL |
above
ground level |
| AGR |
A/G
router |
| AGRM |
air/ground
router-regional manager |
| AGS |
A/G
system |
| AGSS |
ACARS
ground system standard (AEEC) |
| AGTS |
A/G
test station |
| AGVS |
A/G
voice subnetwork |
| AGW |
ARTS
gateway |
| AHC |
attitude
heading computer |
| AHRS |
attitude
heading reference system |
| AI |
alternative
interrogator |
| AI |
artificial
intelligence |
| AIC |
aeronautical
information circular |
| AIDC |
air
traffic services interfacility data communications |
| AIDS |
aircraft/airborne
integrated data system |
| AIED |
aeronautical
industry engineering and development |
| AIEM |
Airlines
International Electronic Meeting (AMC) |
| AIFSS |
automated
international flight service stations |
| AIL |
aileron |
| AIMS |
airport
information management system |
| AINSC |
aeronautical
industry service communication |
| AIO |
analog
input/output |
| AIP |
aeronautical
information publication |
| AIP |
analog
input |
| AIP |
Airport
Improvement Program (FAA) |
| AIRAC |
aeronautical
information regulation and control |
| AIRCOM |
digital
air/ground communications service (SITA) |
| AIRMET |
airman’s
meteorological information |
| AIRO |
analog
input/reference output |
| AIS |
aeronautical
information service |
| AIS |
automatic
information services (Eurocontrol) |
| AISG |
Applications
Interface Subgroup (IATA) |
| AIV |
accumulator
isolation valve |
| AJPS |
AFEPS
journal processing system |
| A/L |
autoland |
| ALC |
airline
link control |
| ALC |
asynchronous
link control |
| ALC |
automatic
level control |
| ALPA |
Air
Line Pilots Association |
| ALPS |
automatic
line protection service |
| ALS |
application
layer structure |
| ALT |
airborn
link terminal |
| ALT |
altitude/alternate |
| ALD HOLD |
altitude
hold mode |
| ALTM |
altimeter |
| ALTN |
alternate |
| ALTS |
altitude
select |
| ALU |
arithmetic
and logic unit |
| AM |
access
module |
| AM |
amplitude
modulation |
| AMASS |
airport
movement area safety system |
| AMC |
Avionics
Maintenance Conference |
| AMCP |
aeronautical
mobile communications panel |
| AME |
amplitude
modulation equivalent |
| AMI |
airline
modifiable information |
| AMLCD |
active
matrix liquid crystal display |
| AMP |
audio
management panel |
| AMPL |
amplifier |
| AMS |
ARINC
maintenance service |
| AMS |
apron
management service |
| AMS |
avionics
management service |
| AMS |
acquisition
management system |
| AMS(R)S |
aeronautical
mobile satellite (route) service |
| AMSS |
aeronautical
mobile satellite service |
| AMTOSS |
aircraft
maintenance task oriented support system |
| AMTS |
aeronautical
message transfer service |
| AMU |
audio
management unit |
| AMU |
ACARS/avionics
management unit |
| AMUX |
audio
multiplexer |
| A/N |
alphanumeric |
| ANC |
Air
Navigation Commission (ICAO) |
| ANDC |
airport
and navigation data compiler |
| ANICS |
Alaskan
NAS Interfacility Communication |
| ANLP |
ARINC
network layer protocol |
| ANP |
actual
navigation performance |
| ANP |
air
navigation plan/performance |
| ANS |
air
navigation system |
| ANS |
ambient
noise sensor |
| ANSI |
American
National Standards Institute |
| ANTC |
advanced
networking test center |
| AO |
acronymic
obfuscation |
| AOA |
ACARS
over AVLC |
| AOA |
angle
of attack |
| AOC |
airport
obstruction chart |
| AOC |
airport
operational communications |
| AOC |
aircraft
operational control |
| AOC |
airline
operational control |
| AOC |
aeronautical
operational control |
| AOC |
airline
operations center |
| AOCC |
airline
operations control center |
| AODB |
airport
operational database |
| AODC |
age
of data, clock (GPS) |
| AODE |
age
of data, ephemeris (GPS) |
| AOG |
aircraft
on ground |
| AOHE |
air/oil
heat exchanger |
| AOM |
aircraft
operating manual |
| AOP |
analog
output |
| AOP |
aeronautical
OSI profile |
| AOP |
airline
operational procedure |
| AOPA |
Aircraft
Owners and Pilots Association |
| AOR |
Atlantic
Ocean region |
| AOR-E |
Atlantic
Ocean region-east |
| AOR-W |
Atlantic
Ocean region-west |
| AP |
airport
location (ACARS/AFEPS) |
| A/P |
autopilot |
| APA |
autopilot
amplifier |
| APA |
Allied
Pilots Association |
| APANPIRG |
ASIA/PAC
Air Navigation Planning & Implementation Regional Group |
| APB |
auxiliary
power breaker |
| APB |
acquisition
program baseline |
| APC |
aeronautical
passenger communication |
| APC |
aeronautical
public correspondence |
| APC |
autopilot
computer |
| APFDS |
autopilot
flight director system |
| APMS |
automated
performance measurement system |
| API |
application
programming interface |
| APN |
ARINC
packet network |
| APP |
approach
control |
| APPR |
approach |
| APR |
actual
performance reserve |
| APRL |
ATN
profile requirement list |
| APU |
auxiliary
power unit |
| APUC |
auxiliary
power unit controller |
| AQF |
avionics
qualification facility |
| AQP |
advanced
qualification program |
| AQP |
avionics
qualification procedure/program |
| A-QPSK |
aeronautical
quadrature phase shift keying |
| AQS |
advanced
quality system |
| ARAC |
Aviation
Rulemaking Advisory Committee (FAA) |
| ARB |
arbitrary
waveform generator |
| ARD |
advanced
requirement definition |
| ARDEP |
analysis
of research & development in Eurocontrol programs |
| ARF |
airline
risk factor |
| ARM |
area
regional manager |
| ARMC |
area
regional maintenance center |
| ARP |
address
resolution protocol |
| ARP |
air
data reference panel |
| ARRAS |
airport
remote radio access system |
| ARS |
administrative
region selector |
| ARS |
automated
radar summary (chart) |
| ARSR |
area/air
route surveillance radar |
| ART |
automatic
reserve thrust |
| ARTAS |
ATM
surveillance tracker & server system (Eurocontrol) |
| ARTCC |
air
route traffic control center |
| ARTS |
automated
radar terminal system |
| A/S |
airspeed |
| AS-3 |
Avionics
System Group 3 (SAE) |
| ASA |
aircraft
separation assurance |
| ASA |
autoland
status annunciator (AFDS) |
| ASAA |
ACARS
system access approval (AEEC) |
| ASAC |
Aviation
Security Advisory Committee (FAA) |
| ASAS |
aircraft
separation assurance system (AEEC) |
| ASC |
aircraft
system controller |
| ASC |
aural
synthesizer card |
| ASCII |
American
standard code for information interchange |
| ASCPC |
air
supply and cabin pressure controllers |
| ASCS |
air
supply control system |
| ASCU |
anti-skid
control unit |
| ASD |
aircraft
situation display |
| ASDAR |
aircraft-to-satellite
data relay |
| ASDE |
airport
surface detection equipment |
| ASDL |
aeronautical
satellite data link |
| ASDR |
airport
surface detection radar |
| ASE |
altimetry
system error |
| ASECNA |
Agency
for Security of Aerial Navigation in Africa and Madagascar |
| ASG |
ARINC
signal gateway |
| ASI |
avionics
system integration |
| ASIC |
application
specific integrated circuit |
| ASL |
above
sea level |
| ASM |
airspace
management |
| ASM |
autothrottle
servo motor |
| A-SMGCS |
advanced
surface movement guidance and control systems |
| ASOS |
automated
surface observation system |
| ASP |
ACARS
subnetwork protocol |
| ASP |
altitude
set panel |
| ASP |
aeronautical
fixed service systems planning (AFS) |
| ASP |
acquisition
strategy paper |
| ASPP |
application
specific programmable processor |
| ASR |
airport
surveillance radar |
| ASRS |
aviation
safety reporting system |
| ASSTC |
aerospace
simulation and systems test center |
| ASSV |
alternate
source selection valve |
| ASTA |
airport
surface traffic automation |
| ASTF |
airspace
system task force |
| ASTOR |
Airborne
Stand-Off Radar (UK) |
| ASV |
alternate
servo valve |
| AT |
air
transport |
| AT |
at
an altitude |
| A/T |
autothrottle |
| ATA |
Air
Transport Association of America |
| ATA |
actual
time of arrival |
| ATAS |
aviation
traffic and application software |
| ATC |
air
traffic control |
| ATCA |
Air
Traffic Control Association |
| ATCBI |
ATC
beacon interrogator |
| ATCC |
area
and terminal control center |
| ATCRBS |
ATC
radar beacon system |
| ATCSS |
ATC
signaling system |
| ATCT |
airport
traffic control tower (FAA) |
| ATDL |
air
transport data link |
| ATE |
automatic
test equipment |
| ATE |
avionics
test and evaluation |
| ATFM |
air
traffic flow management |
| ATHR |
autothrust
system |
| ATI |
airborne
tracker illuminator |
| ATIDS |
airport
surface target identification system/service |
| ATIS |
airport
traffic information system |
| ATIS |
automatic
terminal information service |
| ATL |
autothrottle
limit |
| ATLAS |
abbreviated
test language for avionics systems |
| ATM |
air
traffic management |
| ATM |
asynchronous
transfer mode |
| ATMAS |
ATM
automation system |
| ATM DSS |
ATM
decision support service |
| ATMS |
area
navigation, test and management services |
| ATN |
aeronautical
telecommunication network |
| ATNE |
ATN
engineering |
| ATNP |
ATN
panel |
| ATP |
acceptance
test procedure/plan |
| ATPAC |
Air
Traffic Procedures Advisory Committee (FAA) |
| ATR |
acceptance
test report |
| ATR |
air
transport racking |
| ATS |
air
traffic services |
| ATS |
air
turbine starter |
| ATS |
autothrottle
system |
| ATSC |
air
traffic services communication |
| AT/SC |
autothrottle/speed
control |
| ATSGF |
air
traffic services geographic filter |
| ATSMP |
air
traffic services message processor |
| ATSO |
air
traffic services organization |
| ATSP |
air
traffic services provider |
| ATSRAC |
Aging
Transport Systems Rulemaking Advisory Committee (FAA) |
| ATSU |
air
traffic services unit |
| AUX |
auxiliary |
| AVC |
aviation
VHF car rental availability(messages) |
| AVH |
aviation
VHF hotel availability(messages) |
| AVLAN |
avionics
local area network |
| AVLC |
aviation
VHF link control |
| AVM |
airborne
vibration monitor |
| AVN |
avionics |
| AVOL |
aerodrome
visibility operational level |
| AVPAC |
aviation
VHF packet communications |
| AVS |
aviation
VHF seat availability (messages) |
| AWACS |
airborne
warning and control system |
| AWAS |
automated
weather advisory station |
| AWG |
American
wire gauge |
| AWIN |
aviation
weather information |
| AWIPS |
advanced
weather interactive processing system |
| AWM |
auto
warning mixer |
| AWO |
all
weather operations |
| AWOP |
AWO
panel |
| AWOS |
automated/airport
weather observing system |
| AWR |
aviation
weather research |
| B |
|
| BDMIS |
business
data management and invoicing system |
| BDS |
comm-B
designation subfield |
| BEP |
back-end
processor |
| BEPMS |
BEP
management system |
| BER |
bit
error rate |
| BFE |
buyer
furnished equipment |
| BFO |
beat
frequency oscillator |
| BGI |
bus
grant inhibit |
| BGP |
border
gateway protocol |
| BI |
burn-in |
| BiGs |
bilingual
ground station (ACARS and VDL Mode 2) |
| Binary |
base-2
counting system |
| BIS |
boundary
intermediate system |
| BISMS |
BIS
management system |
| BIST |
built-in
self-test |
| BiSync |
binary
synchronous control |
| BIT |
built-in
test |
| Bit |
a
binary digit |
| BITE |
built-in
test equipment |
| BLK |
block/black |
| BMV |
brake
metering valve |
| BNR |
binary |
| BNS |
boundary
notification system (squitters) |
| BOC |
bottom
of climb |
| BOP/COP |
bit-oriented
protocol/ character-oriented protocol |
| BP |
bite
processor |
| BPCU |
bus
power control unit |
| BPS |
bits
per second |
| BPSK |
binary
phase shift keying |
| BR |
bridge |
| BRG |
bearing |
| BRI |
basic
rate interface |
| BRT |
brightness |
| BSN |
backbone
subnetwork |
| BSC |
binary
synchronous communication |
| BSCU |
brake
system control unit |
| BSP |
board
support package |
| BSU |
beam
steering unit |
| BSU |
bypass
switch unit |
| BTB |
bus
tie breaker |
| BTMU |
brake
temperature monitor unit |
| BU |
backup |
| BUEC |
BU
emergency communications |
| BUFR |
binary
universal form for communication representation |
| BWAN |
BU
wide area network |
| Byte |
a
grouping of eight bits |
| C |
|
| CAA |
civil
aviation authority |
| CAAC |
Civil
Aviation Administration of China |
| CAB |
Civil
Aeronautics Board |
| C&C |
command
and control (also C2) |
| C&W |
control
and warning |
| CAASD |
Center
for Advanced Aviation System Development (Mitre Corp.) |
| CAC |
caution
advisory computer |
| C/A code |
course
acquisition code (GPS) |
| CACP |
cabin
area control panel |
| CAD |
computer-aided
design |
| CADAG |
Communications,
Automation and Data Link Applications Group |
| CADS |
centralized
automatic dependent surveillance |
| CAE |
component
application engineer |
| CAGE |
commercial
avionics GPS engine |
| CAH |
cabin
attendant handsets |
| CAI |
caution
annunciator indicator |
| CALSEL |
variation
of SELCAL system |
| CAM |
computer-aided
manufacturing |
| CARE |
cooperative
actions on R&D in Eurocontrol |
| CAS |
collision
avoidance system |
| CAS |
computed
airspeed |
| CAS |
commercially
available software |
| CASE |
computer-aided
software engineering |
| CAT |
category |
| CAT |
clear
air turbulence |
| CAT |
computer
aided testing |
| CAT |
categories
(I, II, IIIa/b/c) approach |
| CBA |
cost/benefit
analysis |
| CBT |
computer-based
training |
| CC |
connection
confirm |
| CCB |
converter
circuit breaker |
| CCB |
configuration
control board |
| CCD |
category
class diagram |
| CCD |
cursor
control device |
| CCD |
charged
coupled device |
| CCB |
configuration
control board |
| CCIR |
International
Radio Consultative Committee |
| CCITT |
Consultative
Committee International Telephone and Telegraph |
| CCP |
consolidated
control panel |
| CCS |
cabin
communication system |
| CCTV |
closed-circuit
television |
| CD |
chrominance
difference |
| CD |
carrier
detect |
| CDA |
coordinating
design authority |
| CDG |
configuration
database generator |
| CDI |
course
deviation indicator |
| CDM |
collaborative
decision-making |
| CDMS |
CDM
system |
| CDP |
continuous
data program |
| CDR |
critical
design review |
| CDS |
common
display system |
| CDTI |
cockpit
display of traffic information |
| CDU |
control
display unit |
| CEPT |
Conference
Europeene des Postes et Telecommunications |
| CF |
change
field |
| CFDIU |
centralized
fault display interface unit |
| CFDS |
central
fault display system |
| CFDU |
configurable
file data unit |
| CFIT |
controlled
flight into terrain |
| CFM |
cubic
feet per minute |
| CFM |
configuration
management |
| CFMU |
central
flow management unit |
| CFS |
cabin
file server |
| CG |
center
of gravity |
| CHI |
computer/human
interface |
| CHIS |
center
hydraulic isolation system |
| CI |
configuration
item |
| CI |
cabin
interphone |
| CID |
category
interaction diagram |
| CIDIN |
common
ICAO data interchange network |
| CIDS |
cabin
interphone distribution system |
| CIE |
Commission
Internationale de I ‘Eclairage |
| CIP |
capital
investment plan |
| CIP |
convergence
& implementation program (Eurocontrol) |
| CIS |
common
information services |
| CIS |
corporate
information system |
| CLNP |
connectionless
network protocol |
| CLNS |
connectionless
network service |
| CLTP |
connectionless
mode transport protocol |
| CM |
context/configuration
management |
| CMC |
central
maintenance computer |
| CMCF |
CMC
function |
| CMCS |
CMC
system |
| CMD |
command |
| CMF |
common
message format |
| CMGT |
contract
management |
| CMM |
capability
maturity model |
| CMM |
component
maintenance manual |
| CMM |
common
mode monitor |
| CMN |
control
motion noise |
| CMOS |
complementary
metal oxide semiconductor |
| CMP |
configuration
management plan |
| CMS |
cabin
management system |
| CMU |
communication
management unit |
| CNDB |
customized
navigation database |
| CNES |
Centre
National d’Etudes Spatiales |
| C/NO |
carrier-to-noise
density ratio |
| CNP |
com/nav/pulse |
| CNS |
communication,
navigation surveillance |
| CNS/ATM |
communications,
navigation, surveillance/air traffic management |
| CODEC |
coder/decoder |
| COM |
cockpit
operating manual |
| COM |
communications |
| COMM |
communications |
| COM/MET/OPS |
communications/
meteorological/operations |
| CON |
continuous |
| COMSAT |
Communications
Satellite Corp. |
| CONOPS |
concept
of operations |
| CONUS |
continental
United States |
| COP |
character-oriented
protocol |
| COTP |
connection-oriented
transport protocol |
| COTR |
contracting
officer’s technical representative |
| COTS |
commercial-off-the-shelf |
| CP |
central
processor |
| CP |
conflict
probe |
| CP |
control
panel |
| CPA |
closest
point of approach |
| CPA |
collision
prediction and alerting |
| CPC |
controller-pilot
communications |
| CPC |
cabin
pressure controller |
| CPC |
cursor
position control |
| CPCI |
computer
program configuration item |
| CPCS |
cabin
pressure control system |
| CPDLC |
controller-pilot
data link communications |
| CPE |
circular
position error |
| CPI |
continuous
process improvement |
| CPM |
core
processor module |
| CPM |
critical
path method |
| CPS |
cabin
pressure sensor |
| CPS |
central
processing system |
| CPU |
central
processing unit |
| C/R |
command/response |
| CR |
change
of request |
| CR |
contrast
ratio |
| CR |
connection
request |
| CRC |
cyclic
redundancy checking/code |
| CRD |
current
routing domain |
| CRDA |
cooperative
research and development agreement |
| CRM |
crew/cockpit
resource management |
| CRPA |
controlled
reception pattern antenna |
| CRISD |
computer
resources integrated support document |
| CRM |
collision
risk model |
| CRM |
crew
resource management |
| CRR |
cutover
readiness review |
| CRS |
course |
| CRT |
cathode
ray tube |
| CRZ |
cruise |
| CS |
common
service |
| CSC |
common
signaling channel |
| CSC |
cargo
system controller |
| CSC |
computer
software component |
| CSCI |
computer
software configuration item |
| CSF |
command/status
frame |
| CSMA |
carrier
sense multiple access |
| CSMA/CD |
carrier
sense multiple access with collision detection |
| CSCP |
cabin
system control panel |
| CSDB |
commercial
standard data bus |
| CSDS |
cargo
smoke detector system |
| CSEU |
control
systems electronics unit |
| CSMM |
crash
survivable memory modules |
| CSMU |
cabin
system management unit |
| C/SOIT |
communications/surveillance
operational implementation team |
| CSPA |
closely
spaced parallel approach |
| CSTAC |
Commercial
Space Transportation Advisory Committee (FAA) |
| CSU |
configuration
strapping unit |
| CSU |
channel
service unit |
| CSU |
computer
software unit |
| CTA |
control
area |
| CTA |
controlled
time of arrival |
| CTAF |
common
traffic advisory frequency |
| CTAI |
cowl
thermal anti-icing |
| CTAS |
center
TRACON automation system |
| CTC |
cabin
temperature controller |
| CTL |
control |
| CTMO |
centralized
air traffic flow management organization |
| CTOL |
conventional
takeoff and landing |
| CTR |
control
zone |
| CTR |
center |
| CTRD |
configuration
test requirements document |
| CTRL |
control |
| CTS |
clear
to send |
| CTS |
conformance
test suite |
| CTU |
cabin
telecommunications unit |
| CU |
combiner
unit (HUD) |
| CU |
channel
utilization |
| CU |
control
unit |
| CUG |
closed
user group |
| C/UT |
code/unit
test |
| CUTE |
common
use terminal equipment |
| CV/DFDR |
cockpit
voice and digital flight data recorder |
| CVR |
cockpit
voice recorder |
| CVRCP |
cockpit
voice recorder control panel |
| CW |
continuous
wave |
| CW |
clockwise |
| CWI |
continuous
wave interference |
| CWP |
controller/ed
working position |
| CWS |
control
wheel steering |
| D |
|
| D8PSK |
differential
8-phase-shift keying |
| DA |
descent
advisor |
| DA |
design
authority |
| DA |
digital-to-analog |
| DABS |
discrete
addressable beacon system |
| DADC |
digital
air data computer |
| DADS |
digital
air data system |
| DAP |
digital
service access product |
| DAR |
data
access recorder |
| DARC |
direct
access radar channel |
| DARP |
dynamic
aircraft route planning |
| DARPA |
Defense
Advanced Research Projects Agency |
| D-ATIS |
digital
automatic terminal information service |
| DB |
database |
| dB |
decibel |
| dBA |
dB
adjusted |
| DBI |
downlink
block identifier |
| dBI |
dB
referenced to an isotropic antenna |
| dBI |
decibels
above isotopic circular |
| dBM |
dB
below 1 milliwatt |
| DBS |
direct
broadcast satellite |
| DBU |
database
unit |
| DBU |
dial
backup |
| dBW |
dB-watts
or referenced to 1 watt |
| DC |
disconnect
confirm |
| DC |
direct
current |
| DCAS |
digital
control audio system |
| DCD |
double
channel duplex |
| DCE |
data
communications equipment |
| DCGF |
data
conversion gateway function |
| DCL |
departure
clearance (European) |
| DCMF |
data
communication management function |
| DCMS |
data
communication management system |
| DCN |
document/drawing/design
change notice |
| DCP |
data
communication process |
| DCP |
display
control panel |
| DCS |
double
channel simplex |
| DCU |
data
concentration unit |
| DCV |
directional
control valve |
| DD |
data
delivery |
| DDA |
digital
differential analyzer |
| DDD |
dual
disk drive |
| DDM |
difference
in depth of modulation |
| DDP |
declarations
of design and performance |
| DDR |
draft
document review |
| DDS |
data
link delivery of expected taxi clearances |
| DDS |
direct
digital synthesizer |
| DDT |
downlink
data transfer |
| DECCA |
a
navigation system widely used by European shipping |
| DER |
designated
engineering representative |
| DFA |
direction
finding antenna |
| DFCS |
digital
flight control system |
| DFDAF |
digital
flight data acquisition function |
| DFDAMU |
digital
flight data acquisition management unit |
| DFDAU |
digital
flight data acquisition unit |
| DFDR |
digital
flight data recorder |
| DFDU |
digital
flight data unit |
| DFIDU |
dual
function interactive display unit |
| DFIU |
digital
flight instrument unit |
| DFS |
digital
frequency select |
| DFS |
Deutsche
Flugsicherung GmbH (Germany) |
| DFU |
digital
function unit |
| DGNSS |
differential
GNSS |
| DGPS |
differential
GPS |
| DH |
decision
height |
| DI |
data
interrupt |
| DIFAX |
digital
facsimile |
| DIP |
data
interrupt program |
| DIR |
director |
| DIR/INTC |
direct
intercept |
| DISC |
disconnect |
| DISCH |
discharge |
| DIST |
distance |
| DITS |
data
information transfer system |
| DL |
data
link |
| DL |
downlink |
| DLAP |
data
link application processor |
| DLC |
data
link control |
| DLCI |
data
link control identifier |
| DLE |
data
link entity |
| DLK |
data
link (AEEC) |
| DLL |
data
link layer |
| DLM |
data
link management unit |
| DLME |
data
link and message engineering |
| DL/MSU |
data
loader/mass storage unit |
| DLORT |
data
link operational requirements team |
| DLP |
data
link processor |
| DLS |
data
link service/system |
| DLU |
download
unit |
| DM |
disconnected
mode |
| DMA |
direct
memory access |
| DME |
distance
measuring equipment |
| DME/N |
DME
normal |
| DME/P |
DME
precision |
| DMM |
data
memory module |
| DMS |
debris
monitoring sensor |
| DMS |
data
link management system |
| DMU |
data
management unit |
| DoD |
Department
of Defense |
| DoT |
Department
of Transportation |
| DOTS |
dynamic
ocean tracking system |
| DPI |
dots
per inch |
| DPR |
dual
port RAM |
| DPSK |
differential
phase shift keying |
| DR |
dead
reckoning |
| DRAM |
dynamic
random access memory |
| DRER |
designated
radio engineering representative (FAA) |
| DRN |
document
release notice |
| DSAD |
digital
service access device |
| DSARC |
defense
system acquisition review cycle |
| DSB |
double
side band |
| DSB-AM |
DSB,
full carrier digital amplitude modulation |
| DSDU |
data
signal display unit |
| DSF |
display
system function |
| DSP |
digital
signal processor |
| DSP |
display
select panel |
| DSP |
domain
specific part |
| DSPDRV |
display
driver |
| DSR |
display
system replacement |
| DSS |
decision
support services |
| DSU |
data
signaling unit |
| DTD |
data
terminal display |
| DTD |
document
type definition |
| DT&E |
development
test and evaluation |
| DTE |
data
terminal equipment |
| DTG |
distance-to-go |
| DTM |
demonstration
test milestone |
| DTMF |
dual
tone multifrequency (telephone) |
| DTPDU |
data
protocol data unit |
| D-TOC |
digital
transfer of communications |
| DTU |
data
transfer unit |
| DU |
display
unit |
| DUAT |
direct
user access terminal |
| DVD |
digital
video disc |
| DVF |
demonstration
and validation facility |
| DVM |
digital
voltmeter |
| DWAN |
direct
WAN |
| E |
|
| EAA |
Experimental
Aircraft Association |
| EACARS |
enhanced
ACARS |
| EAD |
European
AIS data base (Eurocontrol) |
| EADI |
electronic
attitude director indicator |
| EAI |
engine
anti-ice |
| EANPG |
European
Air Navigation Planning Group |
| EAP |
engine
alert processor |
| EAROM |
electrically
alterable ROM |
| EAS |
equivalent
airspeed |
| EARTS |
en
route automated radar tracking system |
| EASIE |
enhanced
ATM and Mode S implementation in Europe |
| EATCHIP |
European
air traffic control harmonization & integration program |
| EATMS |
European
ATM System (Eurocontrol) |
| ECAC |
European
Civil Aviation Conference |
| ECACNAV |
Eurocontrol
navigation Web site |
| ECAM |
electronic
caution alert module |
| ECC |
error
correcting code |
| ECEF |
earth-centered,
earth-fixed |
| ECL |
emitter
coupler logic |
| ECMP |
electronic
component management system |
| ECN |
engineering
change notice |
| ECO |
engineering
change order |
| ECP |
EICAS
control panel |
| ECP |
engineering
change proposal |
| ECS |
engineering
compiler system |
| ECS |
environmental
control system |
| ECS |
event
criterion subfield |
| ECSL |
left
environmental control system card |
| ECSMC |
ECS
miscellaneous card |
| ECSR |
right
environmental control system card |
| ED |
EICAS
display |
| E/D |
end-of-descent |
| EDA |
electronic
design automation |
| EDAC |
error
detection and correction |
| EDARC |
enhanced
direct access radar channel |
| EDC |
error
detection and correction |
| EDDS |
electronic
document distribution service |
| EDI |
electronic
data interchange |
| EDI |
engine
data interface |
| EDIF |
engine
data interface function |
| EDIU |
engine
data interface unit |
| EDMS |
electronic
data management system |
| EDP |
electronic
data processing |
| EDP |
engineering
development pallet |
| EDP |
engine
driven pump |
| EDS |
explosive
detection system |
| EDU |
electronic
display unit |
| EE |
electrical
engineer |
| EE |
electronics
equipment |
| EEAS |
enhanced
en-route automation system |
| EEC |
Eurocontrol
Experimental Center |
| EEC |
electronic
engine control |
| EEPROM |
electrical
erasable programmable ROM |
| EEU |
ELMS
electronics unit |
| EFB |
electronic
flight bag |
| EFC |
expected
further clearance |
| EFD |
electronic
flight display |
| EFDAS |
European
logical flight data server(Eurocontrol) |
| EFDP |
European
flight data processing(Eurocontrol) |
| EFIC |
electronic
flight instrument controller |
| EFIP |
electronic
flight instrument processor |
| EFIS |
electronic
flight instrument system |
| EFIS CP |
EFIS
control panel |
| EGIHO |
expedited
ground-initiated handoff |
| EGNOS |
European
Geostationary Overlay System |
| EGP |
exterior
gateway protocol |
| EGPWS |
enhanced
ground proximity warning system |
| EGT |
exhaust
gas temperature |
| EHSI |
electronic
horizontal situation indicator |
| EHV |
electro-hydraulic
valve |
| EIA |
Electronic
Industries Association |
| EIA |
Electrical
Institute of America |
| EICAS |
engine
indication and crew alert system |
| EICASC |
EICAS
controls |
| EIPI |
extended
initial protocol identifier |
| EIRP |
earth
incident radiated power |
| EIS |
electronic
instrument system |
| EIS |
engine
indication system |
| EIS |
environmental
impact statement |
| EISA |
extended
industry standard architecture |
| EIU |
electronic
interface unit |
| ELEC |
electrical |
| ELM |
extended
length message |
| ELMS |
electrical
load management system |
| ELS |
electronic
library system |
| ELT |
emergency
locator transmitter |
| EM |
element
manager |
| EM |
electromagnetic |
| EMATS |
endurance
management air traffic system |
| EMC |
electromagnetic
compatibility |
| EMC |
entertainment
multiplexer controller |
| EMER |
emergency |
| EMI |
electromagnetic
interference |
| EMS |
emergency
medical services |
| EMS |
engine
management system |
| ENG |
engine |
| ENOC |
engineering
network operations center |
| E/O |
engine-out |
| EOD |
end
of day |
| EOM |
end
of message |
| EOT |
end
of text |
| EP |
engineering
project |
| EP |
external
power |
| EPC |
engineering
project contractor |
| EPCS |
engine
propulsion control system |
| E-PIREPS |
electronic
pilot reports |
| EPLD |
electronically
programmable logic device |
| EPR |
engine
pressure ratio |
| EPROM |
erasable
programmable ROM |
| EPS |
electrical
power system |
| ERPDU |
error
protocol data unit |
| ERB |
Engineering
Review Board |
| ERD |
end
routing domain |
| ERP |
eye
reference point |
| ERP PDU |
echo
replay protocol data unit |
| ERQ PDU |
echo
request protocol data unit |
| ERU |
engine
replay unit |
| ES |
end
system |
| ESA |
European
Space Agency |
| ESAS |
electronic
situation awareness system |
| ESAS |
enhanced
situational awareness system |
| E-Scan |
electronic
scanning |
| ESD |
electrostatic
discharge |
| ESDS |
electrostatic
sensitive devices |
| ESH |
end
system hello |
| ESID |
engine
and system indication display |
| ESIS |
engine
and system indication system |
| ESS |
environmental
stress screening |
| ESS |
electronic
switching system |
| ESSD |
electrostatic
sensitive devices |
| ESU |
environmental
sensor unit |
| ETA |
estimated
time of arrival |
| ETAS |
enhanced
TRACON/tower automation system |
| ETB |
end
of block (ASCII/IA5 character) |
| ETB |
engineering
test bed |
| ETC |
estimated
time of completion |
| ETD |
estimated
time of departure |
| ETI |
elapsed
time indicator |
| ETM |
elapsed
time measurement |
| ETMS |
engine-trend
monitoring services |
| ETMS |
enhanced
traffic management system |
| ETOP |
extended
twin-engine operations |
| ETRC |
expected
taxi ramp clearances |
| ETVS |
enhanced
terminal voice switch |
| ETX |
end
of transmission |
| EUAFS |
enhanced
upper air forecast system |
| EUPS |
external
uninterruptible power supply |
| EURATN |
European
ATN |
| EURET |
European
research on transport systems |
| EUROCAE |
European
Organization for Civil Aviation Equipment (European equivalent of RTCA) |
| EV |
earned
value |
| EVM |
error
vector magnitude |
| F |
|
| F |
fahrenheit |
| FA |
final
approach |
| FAA |
Federal
Aviation Administration (U.S.) |
| FAA/EURO |
FAA/Eurocontrol
R&D committee |
| FAATC |
FAA
Technical Center |
| FAC |
flight
augmentation computer |
| FADEC |
full
authority digital engine/electronic control |
| FAF |
final
approach fix |
| FAI |
first
article inspection |
| FANS |
Future
Air Navigation System (ICAO) |
| FAR |
|
