List of aviation, aerospace and aeronautical abbreviations
A glossary of abbreviations used in relation to aviation, in alphabetical order.
A
Abbreviation | Term | Note |
---|---|---|
AAE | above aerodrome elevation[1] | |
AAIB | Air Accidents Investigation Branch (United Kingdom) | |
AAO | assumed adverse obstacle | |
AAS | airport advisory service[1] | |
A/C | aircraft[1] | |
AC | advisory circular[2] | Information and guidance publication |
ACAM | aircraft continuous airworthiness monitoring | |
ACARS | Aircraft Communication and Addressing Reporting System | |
ACAS | airborne collision avoidance system | |
ACC | area control centre[1] | |
ACC | active clearance control | Turbine engine system |
ACC | Accessory | In gas turbine engine |
ACFT | aircraft | |
ACI | Airports Council International | |
ACM | air cycle machine | Part of A/C air conditioning system |
ACMS | aircraft condition monitoring system | |
ACU | air condition unit | |
ACU | alternator control unit[2] | Protection from alternator over-voltage. |
AD | airworthiness directive | |
A/D | aerodrome | |
ADA | advisory area | |
ADAHRS | air data attitude heading reference system | |
ADC | air data computer | |
ADD | acceptable deferred defect | |
ADF | automatic direction finder | Navigation equipment |
ADI | Attitude Director Indicator | |
ADIRU | air data inertial reference unit | |
ADIRS | Air Data Inertial Reference System | |
ADIZ | Air Defense Identification Zone | |
ADJ | Adjustment | Mechanical term |
ADS | automatic dependent surveillance | |
ADV | Arbeitsgemeinschaft Deutscher Verkehrsflughäfen German Airports Association | |
AEA | Association of European Airlines | |
AFCS | automatic flight control system | |
A/FD | Airport/Facility Directory | |
AFDS | autopilot flight director system | |
AFE | above field elevation | |
AFS | aeronautical fixed service | |
AFT | Aft The direction against the aircraft movement | |
AFTN | Aeronautical Fixed Telecommunication Network | |
AGB | accessory gear box | Mainly used in turbine engine |
AGL | above ground level | |
AHRS | Attitude and heading reference system | |
AIP | Aeronautical Information Publication | |
AIRAC | Aeronautical information regulation and control | |
AIRMET | Airmen's Meteorological Advisory[3] | In-flight advisory given over 126.7 |
ALI | Airworthiness Limitation Item | |
ALS | approach lighting system | |
ALT | Altitude | |
ALT | Alternate | |
ALUM | Aluminum | |
AMC | Acceptable Means of Compliance (EASA) | |
AME | Aviation Medical Examiner | |
AMM | Aircraft Maintenance Manual | |
AMO | Approved Maintenance Organization | |
AMSL | above mean sea level | |
AMP | aircraft maintenance program | |
ANSP | air navigation service provider | |
ANSP | Authorization of Aircraft Network Security Program (FAA) | |
ANPT | Aeronautical national pipe taper | |
ANSOG | Airport Network Security Operator Guidance (Boeing) | |
A/O | Air oil | In turbine engines |
AOA | angle of attack | |
AOC | air operator's certificate | |
AOG | aircraft on ground | |
AOM | aircraft operations manual / airport/aerodrome operating minima | |
AP | autopilot | |
A/P | airplane (US), aeroplane (ICAO) | |
APP | Appendix | |
APPL | Application | |
APPROX | Approximately | |
APT | airport | |
APU | auxiliary power unit | |
APV | approach procedure with vertical guidance | |
AR | airworthiness review | |
AR | authorization required | |
AR | As required | |
ARC | airworthiness review certificate | |
ARINC | Aeronautical Radio Inc. | |
ARO | airport reservation office | |
ARP | aerodrome reference point | |
ARTCC | air route traffic control centers | |
ASAS | Airborne Separation Assurance System | |
ASDA | Association for Scientific Development of Air Traffic Management in Europe[4] | |
ASI | airspeed indicator | |
ASL | above sea level[1] | |
ASLO | Aircraft Security Logging Overview | |
ASM | airspace management | |
assy | assembly | |
A/T | autothrottle | |
A/THR | Autothrust | |
ATA | Air Transport Association | |
ATC | air traffic control | |
ATF | aerodrome traffic frequency | |
ATFM | air traffic flow management | |
ATIS | Automatic Terminal Information Service | |
ATM | air traffic management | |
ATN | Aeronautical Telecommunication Network | |
ATO | Approved Training Organisation | |
ATPL | Airline Transport Pilot Licence | |
ATQP | Alternative Training and Qualification Programme | |
ATS | air traffic service | |
AVAIL | available | |
AWBS | Aviation weather briefing service[3] | Available at designated FSS's |
AWG | American Wire Gage | The larger the size number, the smaller the wire diameter. |
AWIS | Aviation weather information service[3] | Available at FSS |
AWOS | Automated weather observation system[3] | Automated METAR reporting system |
AWWS | Aviation weather web site[5] | In Canada |
B
Abbreviation | Term | Note |
---|---|---|
BC | back course | |
BCAA | Belgian Civil Aviation Authority | |
BDC | bottom dead centre[1] | Piston engine |
BHP | brake horsepower[1] | |
BITE | Built-In Test Equipment | |
BL | Butt Line | |
B/P | Blue Print | |
BPR | bypass ratio | |
BOM | bill of material | |
BTV | Brake-to-Vacate System | A new feature introduced by Airbus A380 |
BWC | bird watch condition | |
BVID | Barely Visible Impact Damage | |
BVR | Beyond Visual Range |
C
Abbreviation | Term | Note |
---|---|---|
C2 | command and control | |
CA | Captain | |
CAA | Civil Aviation Authority | |
CAME | Continuing Airworthiness Management Exposition | |
CAMO | Continuing Airworthiness Management Organisation | |
CAMP | Continuous Airworthiness Maintenance Program (FAA) | |
CANSO | Civil Air Navigation Services Organisation | |
CAP | cabin attendant panel | |
CAR | civil aviation regulation | |
CARs | civil aviation regulations[6][7] | |
CARS | Canadian Aviation Regulations | |
CAS | calibrated airspeed | |
CASS | Commercial Air Service Standards | |
CASS | continuing analysis and surveillance system | |
CAT | clear air turbulence[1] | |
CAW | continuing airworthiness (EASA) | |
CCRs | closed circuit mixed gas rebreathers | |
CCRs | constant current regulators | |
CDCCL | critical design configuration control limitation | |
CDI | course deviation indicator | |
CDL | configuration deviation list | |
CDU | control/display unit | |
CFIT | controlled flight into terrain | |
CFG | constant frequency generator | |
CFR | Code of Federal Regulations | |
CG | center of gravity | |
CH | Course Heading | |
CHDO | certificate-holding district office (FAA) | |
CI | cost index | |
CMM | component maintenance manual | |
CMO | Certificate Management Office (FAA) | |
CMV | converted meteorological visibility | |
CMPA | complex motor-powered aircraft | |
CofA | Certificate of airworthiness | |
CPDLC | controller–pilot data link communications | |
CPR | Changed product rule (EASA) | |
CRD | Comment-response document (EASA) | Part of rule making process |
CRES | Corrosion resistant steel | |
CS | certification specification (EASA) | |
CSD | constant speed drive | |
CSO | cycles since overhaul | |
CSS | cabin services system | |
CSU | constant speed unit | |
CSCT | Configuration Item Signer Crater Tool (Boeing) | |
CTAF | common traffic advisory frequency | |
CTR | controlled traffic region/control zone | |
CVR | cockpit voice recorder | |
CWS | control wheel steering |
D
Abbreviation | Term | Note |
---|---|---|
D | Compass Deviation | |
DA | density altitude | |
DA/H | decision altitude/height (rel. to THR) See instrument landing system | |
DAH | design approval holder (EASA) | |
DER | departure end of runway | |
DER | Designated Engineering Representative | |
DEU | display electronic unit | |
DG | directional gyro | |
DGPS | differential GPS[1] | |
DGR | Dangerous Goods Regulation | |
DIA | diameter | |
DLR | German Aerospace Center / Deutsches Zentrum für Luft- und Raumfahrt e.V. | |
DME | distance measuring equipment | |
DME | Designated Mechanic Examiner[2] | A person appointed by the FAA |
DMI | deferred maintenance item | |
DO | design organization | |
DOA | design organization approval (EASA) | |
DOM | design organization manual | |
DODAR | diagnose, options, decide, act/assign, review | |
DOW | dry operational weight | |
DP | Departure Procedures | |
DR | dead reckoning | |
DUATS | Direct User Access Terminal Service | |
DWC | dog watch condition |
E
Abbreviation | Term |
---|---|
EA | engineering authorisation |
EADI | Electronic Attitude Direction indicator |
EAS | equivalent airspeed[1] |
EC | engineering control (also E/C) |
EFC | Expect Further Clearance |
EAT | expected approach time[1] |
EASA | European Aviation Safety Agency |
EBOM | engineering Bill of Material |
EBU | engine build-up |
ECAM | electronic centralised aircraft monitor |
ECET | end of civil evening twilight |
ECR | Engineering Change Request |
ECS | Environmental control system |
EDR | engineering data record |
EDTO | extended diversion time operations |
EEC | electronic engine control |
EET | estimated elapsed time |
EFB | electronic flight bag |
EFIS | electronic flight instrument system |
EGPWS | enhanced ground proximity warning system |
EGT | exhaust gas temperature |
EHSI | Electronic Horizontal Situation Indicator |
EICAS | engine-indicating and crew-alerting system |
E-LSA | experimental light-sport aircraft |
ELOS | Equivalent Level of Safety |
ELT | emergency locator transmitter |
EMAS | engineered materials arresting system |
EOBT | estimated off-blocktime |
EPA | European part approval (EASA) |
EPR | engine pressure ratio |
ERM | engineering request for maintenance |
ESA | emergency safe altitude |
ETA | estimated time of arrival |
ETD | estimated time of departure[1] |
ETE | estimated time en route[1] |
ETOPS | Extended-range Twin-engine Operation Performance Standards, see ETOPS |
ETSO | European Technical Standard Order, issued by EASA; see TSO |
EUROCAE | European Organisation for Civil Aviation Equipment |
EVAS | emergency vision assurance system |
EW | Empty Weight |
F
Abbreviation | Term | Note | |
---|---|---|---|
FAA | U.S. Department of Transportations' Federal Aviation Administration | Organisation | |
FADEC | full authority digital engine control | Engine equipment | |
FAC | Flight Augmentation computer | Avionics | |
FAF | final approach fix | ||
FAF | [first available flight] | Airline operations | |
FANS | future air navigation system | Avionics | |
FAP | final approach point | ||
FAP | forward attendant panel | Aircraft equipment | |
FAROS | final approach runway occupancy signal | ||
FATO | final approach and take off | ||
FBO | fixed-base operator | Airfield operations | |
FB | Winds aloft | World Meteorological Organization abbrev. see also FD | |
FBW | fly-by-wire | ||
FC | flight crew | ||
FCF | functional flight check | Check functionality after maintenance | |
FCOM | flight crew operating manual | Aircraft operations | |
FCU | fuel control unit | In turbine engines | |
FD | flight director | Avionics | |
FD | upper winds and temperature forecast[1] | US and Canada abbrev. See also FB | |
FDM | flight data monitoring | Operations planning | |
FDR | flight data recorder (also known as black box) | Avionics | |
FEP | final end point | ||
FFDZ | free fall drop zone (parachutists) | ||
FIC | flight information centre | ||
FIDO | Fog Investigation and Dispersal Operation | Airfield operations | |
FIKI | Flight Into Known Icing | Aircraft operations | |
FIR | flight information region | ATC | |
FISE | flight information service enroute | ||
FL | flight level | ATC | |
FM | frequency modulation | Example: FM immunity | |
FMA | flight mode annunciator | Equipment | |
FMC | flight management computer (part of a FMS) | Avionics | |
FMGC | flight Management and guidance computer | Avionics | |
FMS | flight management system | Avionics | |
F/O | First Officer | Flight crew | |
FOD | foreign object damage | Airfield operations | |
FOO | flight operation officer | Person | |
FOQA | flight operational quality assurance | ||
FPA | flight path angle | ||
FPL | filed flight plan | ATC | |
FPM | feet per minute | ||
FSDO | Flight Standards District Office (FAA) | ||
FSF | Flight Safety Foundation | Organisation | |
FSIMS | Flight Standards Information Management System (FAA) | ||
FSS | flight service station | ||
FTL | flight time limitations | ||
FVU | flux valve unit | Equipment | |
G
Abbreviation | Term | Note |
---|---|---|
GA | general aviation | |
G/A or GA | go-around | |
GBST | ground-based, software tool | Airfield operations |
GCA | Ground-controlled approach | Airfield operations |
GCU | generator control unit | |
GEA | Ground effect area | |
GLOC | g-induced loss of consciousness | "g" is acceleration relevant to the acceleration caused by gravity |
GM | guigance material (EASA) | |
GMM | general maintenance manual | |
GND | ground | Airfield operations |
GP | glide path | See Instrument landing system |
GPP | general practices and procedures | |
GPS | Global Positioning System | Avionics |
GPU | Ground Power Unit | Aerospace Ground Equipment |
GPWS | ground proximity warning system | Avionics |
G/S | glideslope | Avionics |
GS | groundspeed | |
GSE | ground support equipment | Aerospace Ground Equipment |
H
Abbreviation | Term | Note |
---|---|---|
H | Heavy (in the context of wake turbulence categories) | |
H | High | |
HAT | Height Above Touchdown | |
HAZMAT | Hazardous Material | |
HDG | Heading | Navigation |
HDI | Heading Indicator | |
HFE | Human Factors Engineering[8] | |
HFES | Human Factors and Ergonomics Society | |
HIGE | Hover In Ground Effect | |
HIRL | High Intensity Runway lighting | Airfield operations |
HIRO | High Intensity Runway Operation | Airfield operations |
HIRTA | High Intensity Radio Transmission Area | |
HIWAS | Hazardous Inflight Weather Advisory Service | |
HL | Height loss | |
HLD | hold (hold altitude or speed or something else) (same as maintain, but not maintenance!) | |
HMG | hydraulic motor generator | |
HMU | hydro-mechanical unit | |
HOGE | Hover Out of Ground Effect | Helicopter operations |
HPA | human-powered aircraft | Aircraft type |
HPC | high pressure compressor | In turbine engine |
HPT | high pressure turbine | In turbine engines |
HPTACC | high pressure turbine active clearance control | Mainly used in turbofan engines |
HSI | horizontal situation indicator | Avionics |
HUD | head-up display | Avionics |
HUM | Human Remains | |
HW | headwind | |
HYD | hydraulic | Aircraft equipment |
HYDIM | hydraulic interface module |
I
Abbreviation | Term | Note |
---|---|---|
IB | Inboard | |
IAC | instrument approach chart | |
IAF | initial approach fix | |
IAP | instrument approach procedure | |
IAS | indicated airspeed | |
IATA | International Air Transport Association | |
ICA | Instructions for Continuous Airworthiness | |
ICAO | International Civil Aviation Organization | |
ICAS | International Council of the Aeronautical Sciences | |
ICD | Interface Control Document | |
ICO | idle cut-off | |
ICTS | Ice Contaminated Tailplane Stall | |
IDG | integrated drive generator | Combination of a CSD and generator in a single case |
IDT | identify (XPDR) | |
IEPR | integrated engine pressure ratio | |
IETM | interactive electronic technical manual | |
IF | intermediate approach fix | |
IFA | International Federation of Airworthiness | |
IFATCA | International Federation of Air Traffic Controllers' Associations | |
IFE | In Flight Entertainment | |
IFP | instrument flight procedure | |
IFR | instrument flight rules | |
IFSD | in-flight shutdown | |
IGV | Inlet guide vane | |
ILS | instrument landing system | |
IMC | instrument meteorological conditions | |
IML | Inside Mold Line | |
IPC | Illustrated Parts Catalog (e.g. by Boeing, Airbus) | |
IR | Initial Release | |
IR | Initial Release | |
IRS | inertial reference system | |
IRT | instrument rating test | |
IRVR | instrumented runway visual range | |
ISA | International Standard Atmosphere | |
ISFD | integrated standby flight display | |
ISIS | integrated standby instrument system | |
ITAR | International Traffic in Arms Regulations | |
ITT | interstage turbine temperature |
J
Abbreviation | Term |
---|---|
JAA | Joint Aviation Authorities |
JAR | Joint Aviation Requirements |
K
Abbreviation | Term |
---|---|
KCAS | knots calibrated airspeed |
KIAS | knots indicated airspeed |
KRE | key risk element |
KTAS | knots true airspeed |
L
Abbreviation | Term | Note |
---|---|---|
L | Light (in the context of wake turbulence categories) | |
LAHSO | Land And Hold Short Operations | |
LAME | licensed aircraft maintenance engineer | |
LCC | low-cost carrier | |
LCG | load classification group | |
LCN | load classification number | |
LDF LDA | Localizer type directional aid | |
LHO | live human organs | |
LIR | Loading Instruction Report | |
LKP | last known position | |
LLC | Life Limited Component | |
LLP | Life Limited Part (EASA, ICAO) | |
LLZ | localizer (ILS) | |
LM | land and marine | |
LOA | letter of authorization (FAA) | |
LOC | loss of control; localizer | |
LOFT | line-oriented flight training | |
LOTC | loss of thrust control | |
LNAV | lateral navigation | |
LOM | limitation of movement | |
LPC | low pressure compressor | In turbine engines |
LPT | low pressure turbine | |
LPTACC | low pressure turbine active clearance control | Mainly used in turbofan engines |
LPV | localizer performance with vertical guidance | |
LRU | line-replaceable unit | |
LSAP | loadable software aircraft part (EASA) | introduced in RMP for technical records |
LSAS | longitudinal stability augmentation system | |
LTC | line training captain | |
LTP | landing threshold point | |
LVP | low visibility procedures | |
LW | landing weight |
M
Abbreviation | Term |
---|---|
M | medium (in the context of wake turbulence categories) |
MAC | mean aerodynamic chord |
MAC | mid-air collision |
MAP | missed approach point or manifold absolute pressure |
MATS | Manual of Air Traffic Services |
MBC | Main Base Check |
MCDU | multifunction control display unit |
MCH | Manufacturer Certificate Holder (TCCA); see also PAH and POA |
MCP | mode control panel |
MCT | maximum continuous thrust |
MCDU | multi control display unit |
MDA | minimum descent altitude |
MDDR | maintenance deferred defect record |
MDH | minimum descent height |
MDM | multi-disciplinary measure (EASA) |
ME | Manufacturing Engineer |
MEA | Minimum En-route Altitude |
MEDEVAC | medical evacuation |
MEF | maximum elevation figure |
MMEL | master minimum equipment list |
MEL | minimum equipment list |
MEP | multi-engine piston |
METAR | meteorological aerodrome report (METAR) |
MFD | multi function display |
MH | Magnetic Heading |
ML | maintenance laptop |
MLDW | maximum landing weight |
MLG | Main Landing Gear |
MLS | microwave landing system |
MM | middle marker |
MOCA | Minimum Obstacle Clearance Altitude |
MOE | maintenance organisation exposition |
MORA | Minimum Off Route Altitude |
MP | manifold pressure |
MRB | Material Review Board |
MRO | maintenance, repair, overhaul |
MRO | maintenance and repair organization |
MROT | Minimum Runway Occupancy Time |
MRP | Material Resources Planning |
MRW | maximum ramp weight |
MSA | minimum safe altitude / minimum sector altitude |
MSDS | Material Safety Data Sheet |
MSL | mean sea level |
MSLW | Max. Structural Landing Weight |
MSTOW | Max. Structural Take-off Weight |
MTOW | maximum take-off weight |
MSZFW | Max. Structural Zero Fuel Weight |
MVA | Minimum Vectoring Altitude |
MX | Maintenance |
MZFW | maximum zero-fuel weight |
N
Abbreviation | Term | Note |
---|---|---|
NADP | noise abatement departure procedure | |
NDB | non-directional beacon | |
NDT | non-destructive testing | |
NGS | nitrogen generation system | |
NHA | next higher assembly | |
NIST | National Institute of Standards and Technology | |
NLG | Nose Landing Gear | |
NORDO | no radio | |
NOTAM | notice to airmen | |
NOTAR | no tail rotor[2] | helicopter control system |
NPA | non-precision approach | |
NPA | notice of proposed amendment (EASA) | |
NPRM | notice of proposed rulemaking (FAA) | |
NRR | noise reduction rating | hearing protector attenuation |
NRTC | nonroutine task card | |
NTZ | no-transgression zone |
N numbers (turbines)
Abbreviation | Term | Note |
---|---|---|
N | compressor speed[1] | N1, N2, etc. refers to specific turbine spool/stage. |
Ng | gas generator speed[1] | |
NP | power turbine speed[1] | |
Nh | high rotor speed[1] |
O
Abbreviation | Term |
---|---|
OAT | outside air temperature |
OBE | overcome by events |
OBS | omni-bearing selector |
OCA | obstacle clearance altitude |
OCCM | on condition / condition monitored components |
OCH | obstacle clearance height |
OEI | one engine inoperative |
OEM | original equipment manufacturer |
OGV | outlet guide vane |
OHM | overhaul manual |
OIS | obstacle identification surface |
OM | outer marker |
ONS | onboard network system |
ONAT | Onboard Network Access Terminal |
OTS | out of service |
OPC | operational check |
OPS/CHK | operational check |
OW | operational weight |
P
Abbreviation | Term |
---|---|
P | (as a prefix:) prohibited airspace |
PA | pressure altitude |
PAH | production approval holder (FAA); see also POA and MCH |
PANS-OPS | procedures for air navigation services – aircraft operations |
PAPI | precision approach path indicator |
PAOG | Pre Aircraft on Ground |
PAR | precision approach radar |
PATWAS | Pilot's Automatic Telephone Weather Answering Service[3] |
PAX | passenger |
PBCS | performance-based communication and surveillance |
PBD | place bearing distance (RNAV waypoint) |
PBE | Protective Breathing Equipment |
PBN | Performance-Based Navigation |
PCN | pavement classification number |
PDG | procedure design gradient |
PDAS | public domain aeronautical software |
PDU | power drive unit (flap actuation) |
PET | point of equal time |
PF | pilot flying |
PFD | primary flight display |
PFAF | precision final approach fix |
PIC | Pilot In Command |
PICUS | Pilot In Command, under supervision[9] |
PIO | Pilot Induced Oscillations |
PIP | performance improvement package |
PIREP | Pilot Report |
PJE | Parachute jumping exercise |
PM | pilot monitoring |
PMA | Parts Manufacturer Approval |
PMG | Permanent magnet generator |
PN | part number (also P/N) |
PNF | pilot not flying |
PNR | Point of No Return |
POA | Production Organisation Approval (EASA); see also PAH and MHC |
POB | persons on board |
POH | Pilot's Operating Handbook |
POF | Principles Of Flight |
PPL | private pilot licence |
PPR | prior permission required |
PSR | point of safe return |
PSR | power supply reset |
PSR | primary surveillance radar |
PSU | personal service unit |
PS | passenger step |
PTF | permit to fly |
PTT | push to talk |
PTU | power transfer unit |
Q
Abbreviation | Term |
---|---|
QAR | quick access recorder |
QCM | quality and compliance monitoring |
QEC | quick engine change |
QFE | the Q-code for: Atmospheric pressure at aerodrome elevation (or at runway threshold) |
QNE | the Q-code for pressure altitude |
QNH | the Q-code for: Altimeter sub-scale setting to obtain elevation when on the ground, i.e. altitude above MSL |
QRA | quick reaction alert |
QRH | quick reference handbook |
R
Abbreviation | Term | Note |
---|---|---|
R | (as a prefix:) restricted airspace | |
RA | radio altitude or radar altimeter | |
RA | resolution advisory (in the context of TCAS) | |
RAAS | Runway Awareness and Advisory System | |
RAAS | remote airport advisory service | |
RAIM | Receiver Autonomous Integrity Monitoring | |
RAREPS | Weather Radar Reports[3] | Provided by Air Traffic Controllers |
RAS | rectified air speed | |
RA(T) | restricted area (temporary) | |
RAT | ram air turbine | |
RCO | remote communications outlet | |
RDH | reference datum height for ILS | |
RESA | runway end safety area | |
RFF | rescue and fire fighting | |
RFI | recreational flight instructor | |
RGB | reduction gear box | |
RIA | regulatory impact assessment (EASA) | |
RII | required inspection items | |
RMI | radio magnetic indicator | |
RMT | rule making task (EASA) | |
RNAV | area navigation | |
RNP | required navigation performance | |
RPL | Recreational Pilot Licence | |
RPL | repetitive flight planning | |
RPT | regular public transport | |
RSA | runway safety area | |
RSR | en-route surveillance radar | |
RT | radiotelephony | |
RTB | return to base | |
RTL | rudder travel limiting | |
RTO | rejected take-off | |
RTOW | regulatory take-off weight | |
RVDT | rotary variable differential transformer | In a turbine engine |
RVR | runway visual range | |
RVSM | reduced vertical separation minima | |
RW | ramp weight | |
RWY | runway |
S
Abbreviation | Term |
---|---|
SAR | Surveillance Approach Radar |
SAS | stability augmentation system |
SB | service bulletin |
SC | special condition |
SCAP | Standard Computerized Airplane Performance |
SDF | Simplified directional facility |
SEP | single-engine piston |
SESAR | Single European Sky ATM Research |
SFCC | Slat Flap Control Computer |
SFO | Senior First Officer |
SFOC | Template:Special Flight Operating Certificate |
SID | standard instrument departure |
SIGMET | Significant Meteorological Information |
SLPC | single lever power control |
SM | service manual |
SMM | safety management document (ICAO) |
SMOH | Since major overhaul |
SMR | surface movement radar |
SMT | software maintenance tool |
SN | serial number |
SOC | start of climb at missed approach |
SODPRO | simultaneous opposite direction parallel runway operations |
SOP | standard operating procedure |
SOW | Statement of Work |
SR | sunrise |
SRM | structural repair manual |
SS | sunset |
STAR | standard terminal arrival route |
STC | supplemental type certificate |
STOL | short take-off and landing[1] |
T
Abbreviation | Term | Note |
---|---|---|
TA | traffic advisory (see TCAS) | |
TAA | terminal arrival area | |
TAC | thrust asymmetry compensation | |
TACAN | tactical air navigation | |
TAF | terminal aerodrome forecast | |
TAM | total airport management | |
TAR | terminal approach radar | |
TAS | true airspeed | |
TAT | total air temperature | |
TAWS | terrain awareness and warning system | |
TBO | time between overhauls | |
TBV | transient bleed valve | In turbine engines |
TC | towering cumulus | |
TC | turn coordinator | |
TC | True Course | |
TC | type certificate | |
TCDS | type certificate data sheet | |
TCA | terminal control area | |
TCAS | traffic collision avoidance system | |
TCCA | Transport Canada's Civil Aviation | |
TCH | threshold crossing height | |
TCU | terminal control unit | Air traffic control |
TDZ | touchdown zone | |
TERPS | terminal procedures | |
TFC | traffic | |
TFR | temporary flight restriction | Airspace |
TGB | transfer gearbox | |
TGL | temporary guidance leaflet | |
THLD | threshold | |
TH | True Heading | |
THR | runway threshold | |
THS | trimmable horizontal stabilizer, see tailplane | |
TLD | time-limited dispatch | |
TLB | technical logbook (EASA) | |
TMA | terminal manoeuvring area (Europe)/terminal control area (USA and Canada) | |
TMG | touring motor glider | |
TML | Toolbox Mobile Library (Boeing) | |
TMZ | transponder mandatory zone | |
TOC | Top of Climb (also known as T/C) | |
TOD | top of descent | |
TODA | take-off distance available | |
TO/GA | take-off/go around | |
TOP | take-off power | |
TOR | take-off runway | |
TORA | take-off runway available | |
TOW | take-off weight | |
TOWS | take-off warning system | |
TP | turning point at missed approach | |
TRA | temporary reserved area (airspace) | |
TRACON | terminal radar approach control | |
TRE | type rating examiner | |
TRP | thrust rating panel | |
TSO | technical standard order[2] | FAA specification of quality standard. |
TTAF | total time air frame | |
TTSN | total time since new | |
TTSO | total time since overhaul | |
TWB | Transcribed Weather Broadcasts[3] | Abbreviated area forecast |
TWC | tail wind component | |
TWLU | Terminal Wireless LAN Unit | |
TWR | tower | |
TWY | taxiway |
U
Abbreviation | Term |
---|---|
UAS | Unmanned Aircraft System[10] |
UAV | unmanned air vehicle |
UHF | ultra-high frequency |
UIR | upper information region |
UTC | Universal Time Coordinated |
V
Abbreviation | Term | Note |
---|---|---|
V | Magnetic Variation | |
V&V | Video & Vision[11] | |
VASI | visual approach slope indicator | |
VBV | variable bleed valve | In turbine engines |
VCS | vehicle control service | |
VDP | Visual descent point | |
VFR | visual flight rules | |
VGM | voice generator module | See AWOS |
VHF | very high frequency | |
VMC | visual meteorological conditions | |
VNAV | vertical navigation | |
VOR | VHF omni-directional range | |
VIGV | Variable Inlet Guide Vane | |
VSCF | Variable speed constant frequency | Electricity generation system |
VSI | Vertical speed indicator | |
VSV | Variable Stator Vane | In a turbine engine |
VTA | VFR terminal area chart[1] | |
VTOL | vertical take-off and landing[1] | |
VVI | Vertical velocity indicator | Same as VSI |
VID | Visible Impact Damage |
V speeds
Abbreviation | Term |
---|---|
V1 | speed at or above which takeoff cannot be safely interrupted |
V2 | speed at or above which takeoff can be done with 1 engine out |
Va | maneuvering speed |
Vfe | maximum flaps extended speed |
Vle | maximum landing gear extension sp |
Vlo | maximum landing gear operating speed |
vlof | lift of speed |
Vmc | minimum control speed |
Vmca | velocity of minimum control in the air |
Vmcg | velocity of minimum control on ground |
Vmo | maximum operating speed |
Vne | never-exceed speed |
Vno | normal operating speed limit |
Vr | rotate speed |
Vra | Rough Air Speed |
Vref | reference touchdown speed |
Vs | stall speed |
Vso | stall speed in landing configuration |
Vx | best angle of climb speed |
Vy | best rate of climb speed |
W
Abbreviation | Term |
---|---|
WAC | World Aeronautical Chart |
WAT | weight, altitude, temperature: variables that affect takeoff performance |
W&B | Weight & Balance |
WCA | Wind Correction Angle |
WEF | with effect from |
WOFW | weight-off-wheels, indicates aircraft is off ground since lift off |
WONW | weight-on-wheels, indicates aircraft is on ground since touch down |
WS | wind shear |
WTC | Wake Turbulence Category |
Wx | weather[1] |
X
Abbreviation | Term |
---|---|
XC | cross-country[1] |
XMIT | transmit |
XPDR | transponder |
XPNDR | transponder |
Y
Abbreviation | Term |
---|---|
Y | yaw or yaw angle |
Y/D | yaw damper |
Z
Abbreviation | Term |
---|---|
Z | Zulu Time (UTC) |
ZFT | zero-fuel time |
ZFW | zero-fuel weight |
ZULU | Zulu Time (UTC) |
See also
References
- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 McDonald, Sandy A.F. From the ground up. Aviation Publishers Co. Ltd. pp. Appendix B.
- 1 2 3 4 5 Jeppesen, Boeing. A&P Technician General Textbook. pp. Glossary.
- 1 2 3 4 5 6 7 Nielsen, Dane. PILOT PREP. Canuck West Holdings Inc.
- ↑ Association for Scientific Development of Air Traffic Management in Europe
- ↑ "AWWS – Forecasts and Observations". flightplanning.navcanada.ca. Retrieved 2017-04-06.
- ↑ http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgccab.nsf/MainFrame?OpenFrameSet
- ↑ https://www.casa.gov.au/rules-and-regulations/landing-page/current-rules
- ↑ http://acronyms.thefreedictionary.com/HFE
- ↑ http://www.caa.co.uk/docs/33/CAP%20804%20Amtd%2015%20Sept%202014.pdf. Missing or empty
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(help) - ↑ US DoD
- ↑ http://acronyms.thefreedictionary.com/V%26V
Sources
- Aerospace acronyms Terms and Glossary
- Aviada Terminaro, verkita de Gilbert R. LEDON, 286 pagxoj.
External links
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