PowerShell/Data/Abbr/aviation.csv

1	ABBR	MEANING
2	3P	Perceive, Process, Perform
3	5P	Plan, Plane, Pilot, Passengers, Programming
4	7500	Transponder code for Aircraft hijacking (ICAO)
5	7600	Transponder code for Radio failure (lost communications, ICAO)
6	7700	Transponder code for Emergency (ICAO)
7	A/A	Air to air TACAN function
8	A/C	Aircraft
9	A/D	Aerodrome
10	A/F	Autofeather
11	A/FD	Airport/Facility Directory
12	A/P	Autopilot
13	A/R	Altitude Rate
14	A300	Airbus A300 twinjet
15	A310	Airbus A310 twinjet
16	A320	Airbus A320 family of twinjets
17	A330	Airbus A330 twinjet
18	A340	Airbus A340 quadjet
19	A350	Airbus A350 twinjet
20	A380	Airbus A380 quadjet
21	AAA	Airport Airspace Analysis
22	AAE	Above Aerodrome Elevation
23	AAF	Airway Facilities Service
24	AAF	Army Air Field
25	AAI	Arrival Aircraft Interval
26	AAI	Airports Authority of India
27	AAIB	Air Accidents Investigation Branch (UK)
28	AAIM	Aircraft Autonomous Integrity Monitoring
29	AAM	Advanced Air Mobility
30	AAMS	Aircraft Arrival Management System
31	AARTS	Army Aviation Radar Training System
32	AAO	Assumed Adverse Obstacle
33	AAS	Airport Advisory Service
34	AB	Air Base, Afterburner
35	ABI	Advanced Boundary Information
36	AC	Air Conditioning
37	AC	Aircraft
38	ACAC	Arab Civil Aviation Conference
39	ACAM	Aircraft Continuing Airworthiness Monitoring
40	ACARS	Aircraft Communications Addressing and Reporting System
41	ACAS	Airborne Collision Avoidance System
42	ACC	Area Control Center
43	ACE	Airport airside Capacity Enhancement
44	ACI	Airports Council International
45	ACP	Accept
46	AD	Air Defence
47	ADAC	Abu Dhabi Airports
48	ADEP	Aerodrome of Departure
49	ADES	Aerodrome of Destination
50	ADF	Automatic Direction Finding
51	ADI	Automatic De-Ice and Inhibitor
52	ADIRS	Air Data and Inertial Reference System
53	ADIRU	Air Data Inertial Reference Unit
54	ADIZ	Air Defense Identification Zone
55	ADL	Aeronautical Data Link
56	ADLY	Arrival Delay
57	ADP	Aerodrome dé Paris (Charles de Gaulle)
58	ADP	Automated Data Processing
59	ADS	Automated Distribution System
60	ADS	Automatic Dependent Surveillance
61	ADS-B	Automatic Dependent Surveillance-Broadcast
62	AENA	Aeropuertos Españoles y Navegación Aérea
63	AEO	All Engines Operative
64	AERA	Automated En-Route Air Traffic Control
65	AEW	Airborne Early Warning
66	AF	Air Field
67	AFCS	Automatic Flight Control System
68	AFI	Air Force Instruction
69	AFIS	Aerodrome Flight Information Service
70	AFTN	Aeronautical Fixed Telecommunication Network
71	AFM	Aircraft Flight Manual
72	AGAS	Action Group for ATM Safety (EUROCONTROL)
73	AGL	Above Ground Level
74	AH	Acceleration Height
75	ahdg	alter heading
76	AICS	Aircraft Inventory and Charter System
77	AID	Airport Information Desk
78	AIDS	Aircraft Integrated Data System
79	AIG	Airbus Industries Group
80	AILS	Automatic Instrument Landing System
81	AIM	Aeronautical Information Manual
82	AIP	Aeronautical Information Publication
83	AIPA	Aeronautical Information Production Application
84	AIRAC	Aeronautical Information Regulation And Control
85	AIRMET	Airmen's Meteorological Information
86	AIRNAV	Airports and Navigation Aids Database System
87	AIRNET	Airport Network Simulation Model
88	AIRPAC	Advisor for the Intelligent Resolution of Predicted Aircraft
89	ALO	Aviation Logistics Organization
90	ALP	Airport Layout Plan
91	ALPA	Airlines Pilots Association
92	ALS	Approach Lighting System
93	ALSF	Approach Lighting System With Sequenced Flashing Lights
94	ALSF1	ALS with Sequenced Flashers I
95	ALSF2	ALS with Sequenced Flashers II
96	ALSIP	Approach Lighting System Improvement Plan
97	ALTRV	Altitude Reservation
98	AM	Airfield Management
99	AMAN	Arrival Manager
100	AMASS	Airport Movement Area Safety System
101	AMCC	Air Route Traffic Control Center Maintenance Control Center
102	AMIC	Area Manager in Charge
103	AMIS	Aircraft Management Information System
104	AMOC	Alternative Methods of Compliance
105	AMOS	Automated Meteorological Observation Station
106	AMP	ARINC Message Processor (OR) Airport Master Plan
107	AMS	Acquisition Management System
108	AMT	Aviation Maintenance Technician
109	AMVER	Automated Mutual Assistance Vessel Rescue System
110	ANC	Alternate Network Connectivity
111	ANCA	Airport Noise and Capacity Act
112	ANG	Air National Guard
113	ANGB	Air National Guard Base
114	ANMS	Automated Network Monitoring System
115	ANSP	Air Navigation Service Provider
116	AOA	Angle of Attack, Air Operations Area, Airport Operating Area
117	AOB	Airfield Operations Board
118	AOC	Airline Operational Control Center
119	AOCC	Atlantic Operations Control Center
120	AODR	Authorizing Official Designated Representative
121	AOM	Airplane Operating Manual
122	AOPA	Aircraft Owners and Pilots Association
123	AOR	Area of Responsibility
124	AP	Acquisition Plan
125	APB	Acquisition Program Baselines
126	APM	Approach Path Monitor
127	APP	Approach
128	APS	Airport Planning Standard
129	APTS	Automated Personnel Tracking System
130	APU	Auxiliary Power Unit
131	AQAFO	Aeronautical Quality Assurance Field Office
132	AR	Aerial Refueling
133	AR	Aspect Ratio
134	ARAC	Army Radar Approach Control (AAF)
135	ARFOR	Area Forecast
136	ARLNO	Airline Office
137	ARP	Airport Reference Point
138	ARTCC	Air Route Traffic Control Centre
139	ASB	Airspace Block
140	ASDA	Accelerate Stop Distance Available
141	ASDE	Airport Surface Detection Equipment
142	ASDE-X	Airport Surface Detection Equipment, model X
143	ASOS	Automated Surface Observation System
144	ASR	Airport Surveillance Radar
145	ASTERIX	All Purpose Structured Eurocontrol Surveillance Information Exchange
146	ATA	Actual Time of Arrival
147	ATC	Air Traffic Control
148	ATCALS	Air Traffic Control and Landing Systems
149	ATCO	Air Traffic Control Officer
150	ATIS	Automatic Terminal Information Service
151	ATM	Air Traffic Manager
152	ATO	Air Traffic Organization
153	ATPL	Airline Transport Pilot License
154	AURO	Autorotation (by helicopters)
155	AWACS	Airborne Warning And Control System
156	BC	Back Course
157	BAF	Belgian Air Force
158	BASH	Bird/Wildlife Aircraft Strike Hazard
159	BDOC	Base Defense Operations Center
160	BIRTAM	NOTAM on Bird Activity
161	BIT	Build-In Test
162	BITE	Build-In Test Equipment
163	BRNAV	Basic Area Navigation
164	BWB	Blended Wing Body
165	BWC	Bird Watch Condition
166	C2	Command and Control
167	C3	Communication, Command and Control
168	C4I	Communication, Command, Control, Computers and Intelligence
169	CAAC	Civil Aviation Administration of China
170	CAAS	Civil Aviation Authorization of Singapore
171	CAL	Computer Assisted Learning
172	CAMACA	Common Agreed Methodology for Airport airside Capacity Assessment
173	CANAC	Computer Assisted National Air Traffic Control Centre (Belgium)
174	CANSO	Civil Air Navigation Services Organization
175	CARMA	CATC Radar Simulator Allahabad
176	CAS	Calibrated Airspeed
177	CASE	Controlled Airspace Synthetic Environment (Simulator of Alenia Marconi)
178	CAT	Category of Aircraft, Clear Air Turbulence
179	CATC	Civil Air Traffic Control
180	CAVOK	Clouds And Visibility OK
181	CBT	Computer-based Training
182	CC	Commander
183	CCBC	Community College Baltimore County
184	CCIS	Closed Circuit Information System
185	CCTLR	Chief Controller
186	CDA	Continuous Descent Approach
187	CDI	Course Deviation Indicator
188	CDM	Collaborative Decision Making
189	CDTI	Cockpit Display of Traffic Information
190	CDU	Cockpit Display Unit
191	CEATS	Central European Air Traffic Services
192	CESC	Chief Executive Standing Conference
193	CFIT	Controlled Flight Into Terrain
194	CFMU	Central Flow Management Unit
195	CFR	Code of Federal Regulations
196	COG	Center of Gravity
197	CON	Control
198	CGD	Combined Graphic Display
199	CISM	Critical Incident Stress Management
200	CLC	Course Line Computer
201	CLNC	Clearance
202	CMA	Controlled Movement Area
203	CMIC	Civil/Military Interface Standing Committee
204	CNS	Communication, Navigation, Surveillance
205	CODA	Central Office for Delay Analysis
206	ConOps	Concept of Operations
207	COPS	Changeover Point(s)
208	CORA	Conflict Resolution Advisory
209	COTS	Commercial Of-The-Shelf
210	CPA	Closest Point of Approach
211	CPDLC	Controller Pilot Data Link Communication
212	CPI	Crash Position Indicator
213	CPL	Commercial Pilot License
214	CRC	Control and Reporting Centre
215	CRDA	Converging Runway Display Aid
216	CREDOS	Crosswind Reduced Separations for Departure Operations
217	CTA	Controlled Area, Controlled Time of Arrival
218	CTAF	Common Traffic Advisory Frequency
219	CTOT	Calculated Take-Off Time
220	CTR	Control Zone or Controlled Traffic Region
221	CV	Vice Commander
222	CVFR	Controlled Visual Flight Rule (flight)
223	CVSM	Conventional Vertical Separation Minimum
224	CW	Continous Wave
225	CW	Cold Weather
226	CWS	Collision Warning System
227	CWP	Controller Working Position
228	CWY	Clearway
229	DA	Density Altitude
230	DAS	DFS Aviation Services (DFS subcompany for services outside Germany)
231	DCIA	Dependent Converging Instrument Approach
232	DECIDE	Detect, Estimate, Choose, Identify, Do, and Evaluate
233	DEL	Delivery
234	DER	Departure End of Runway
235	DFS	Deutsche Flugsicherung (ATC in Germany)
236	DGAC	Direction Générale de l'Aviation Civile
237	DLA	Defense Logistics Agency
238	DP	Departure Procedure
239	DSNA	Direction des Services de la Navigation Aérienne
240	DTI	Direction Technique Innovation
241	DVA	Diverse Vector Area
242	DW	Downwind
243	EAS	Equivalent Airspeed
244	EAVA	Estonian Aviation Academy
245	ECAC	European Civil Aviation Conference
246	eCTOL	Electric Conventional Take-off and Landing
247	ECP	Entry Control Point
248	EFM	Gesellschaft für Enteisen und Flugzeugschleppen
249	EICAS	Engine Instrument Crew Alerting System
250	ELEV	Field Elevation
251	ELT	Emergency Locator Transmitter
252	EOL	Engine-off landing
253	ERPM	Engine Rotations per Minute
254	eSTOL	Electric Short Take-off and Landing
255	ETA	Estimated Time of Arrival, East Transition Area
256	ETL	Effective Translational Lift (for helicopters)
257	ETOPS	Extended-range Twin-engine Operational Performance Standards
258	ETVS	Electronic Terminal Voice Switch
259	eVTOL	Electric Vertical Take-off and Landing
260	FAA	U.S. Federal Aviation Administration
261	FAR	Fuel Air Ratio
262	FAS	Final Approach Segment
263	FAS	Final Approach Speed
264	FAST	Future Aviation Safety Team
265	FAT	Factory Acceptance Test (see also SAT and RAT)
266	FAT	Final Approach Track
267	FATO	Final Approach and Take-off Area
268	FAWP	Final Approach Waypoint
269	FAWS	Flight Advisory Weather Service
270	FBO	Fixed-Base Operator
271	FBW	Fly-by-Wire
272	FCA	Final Cruise Altitude
273	FCC	Federal Communications Commission (USA)
274	FCC	Flight Control Computer
275	FCI	Flight Command Indicator
276	FCL	Flight Crew Licensing
277	FCLP	Field Carrier Landing Practice
278	FCLT	Freeze Calculated Landing Time
279	FCLTP	Flight Crew Licensing and Training Panel (ICAO)
280	FCOM	Flight Crew Operating Manual
281	FCOM	Flight Crew Operations Manual
282	FCPC	Flight Control Primary Computer
283	FE	Field Elevation (highest point of an airport’s usable runways and is measured in height above mean sea level)
284	FIA	Flight Information Area
285	FIR	Flight Information Region
286	FL	Flight Level
287	FLIP	Flight Information Publication
288	FMG	Flughafen München GmbH
289	FMS	Flight Management System
290	FOD	Foreign Object Debris
291	FOV	Field of View
292	FWC	Flight Warning Computer
293	GA	General Aviation, Go Around (VFR)
294	GND	Ground
295	GP	Glide Path
296	GPS	Global Positioning System
297	GS	Ground Speed or Glideslope
298	HEMS	Helicopter Emergency Medical Services
299	HKIA	Hong Kong International Airport
300	HOGE	Hover Out of Ground Effect
301	HOTS	Higher-Order Thinking Skills
302	IAA	Israeli Airport Authority
303	IAF	Israeli Air Force
304	IAS	Indicated airspeed
305	IATA	International Air Transport Association, HQ in Montreal, Canada
306	ICA	Initial Climb Area
307	IFE	In-flight Emergency
308	IFR	Instrument Flight Rules
309	IG	Image Generator
310	IGE	In Ground Effect
311	IGLR	Integrated Ground Lighting and Radar
312	ILS	Instrument Landing System
313	ISA	International Standard Atmosphere
314	IMC	Instrument Meteorological Conditions
315	KAT	Kaufbeuren ATM Training (DFS subcompany)
316	KCAS	Calibrated AirSpeed in Knots
317	KIAS	Indicated Airspeed in Knots
318	KTAS	True AirSpeed in Knots
319	LAA	Lappland Aviation Academy
320	LDA	Landing Distance Available
321	LDAH	Landing Distance Available for Helicopter
322	LITAS	Low Intensity Two Colour Approach System
323	LL	Lower Limit
324	LMUK	Lockheed Martin UK
325	LOD	Level of Detail
326	LTA	Lower Traffic Area
327	LUAW	Line up and wait
328	LVNL	Luchtverkeersleiding Nederland (Air Traffic Control the Netherlands)
329	LVP	Low Visibility Procedures
330	LWINS	Lightweight Inertial Navigation System
331	MA	Missed Approach (IFR)
332	MATS	Malta Air Traffic Services
333	MEA	Minimum En-route Altitude
334	METAR	Meteorological Aerodrome Report
335	MCP	Maximum Continuous Power
336	MGTOW	Maximum Gross Take-off Weight
337	MLW	Maximum Landing Weight
338	MMR	Multi-Mode Receiver
339	MSA	Minimum Safe Altitude
340	MSL	Median Sea Level
341	MSTA	Minimum Safe Turning Altitude
342	MTOW	Maximum Take-Off Weight
343	NATCA	National Air Traffic Controllers Association
344	NATOPS	Naval Aviation Training and Operating Procedures Standardization
345	NATS	National Air Traffic Services (UK)
346	NAVAIDS	Navigational Aids
347	NCOIC	Non-Commissioned Officer in Charge
348	NIMA	National Imagery Mapping Agency
349	NLFS	Night Low Flying System
350	NM	Nautical Mile
351	NORDO	No Radio
352	NOTAM	Notice to Airmen or Notice to Air Missions
353	NUAIR	Northeast UAS Airspace Integration Research (a New York based nonprofit organization)
354	OCS	Obstacle Clearance Surfaces
355	OCTA	Outside Control Areas
356	OEI	One Engine Inoperative
357	ODP	Obstacle Departure Procedure
358	OGE	Out of Ground Effect
359	OFZ	Obstacle Free Zone
360	OJT	On the Job Training
361	OODA	Observation, Orientation, Decision, and Action
362	PA	Pressure Altitude
363	PAPI	Precision Approach Path Indicator
364	PAR	Precision Approach Radar
365	PCAS	Primary Crash Alarm System
366	PIC	Pilot in Command
367	PNF	Pilot Not Flying
368	POH	Pilot's Operating Handbook
369	PPL	Private Pilot's License
370	PMI	Preventative Maintenance Inspection
371	POFZ	Precision Obstacle Free Zone
372	PTAC	Position, Turn, Altitude, Clearance (also known as Approach Clearance)
373	PtF	Permit to Fly
374	QFE	the altimeter setting that will cause the altimeter to read the height above a specific aerodrome or ground level, and therefore read zero on landing
375	QNE	pressure altitude at the landing runway threshold
376	QNH	atmospheric pressure adjusted to mean sea level
377	RADAR	Radio Detection And Ranging
378	RADNET	Radar Network
379	RAIM	Receiver Autonomous Integrity Monitoring (GPS)
380	RAPCON	Radar Approach Control
381	RAT	Reliability Acceptance Test (see also FAT and SAT)
382	RAM	Radar Absorbent Material
383	RAP	Recognised Air Picture
384	RASP	Recognised Air and Surveillance Picture
385	RB	Relative Bearing
386	RBI	Relative Bearing Indicator
387	RBAF	Royal Belgium Armed Forces
388	RCAF	Royal Canadian Air Force
389	RCC	Rescue Co-ordination Centre
390	RCL	Runway Centre Line Lighting
391	RCR	Runway Condition Reading
392	RCS	Radar Cross Section
393	RESA	Runway End Safety Area
394	RET	Rapid Exit Taxiways
395	RF	Radio Frequency
396	RFFS	Rescue and Fire Fighting Services
397	RFM	Rotorcraft Flight Manual
398	RIMCAS	Runway Incursion Monitoring and Conflict Alert System
399	RJAF	Royal Jordanian Air Force
400	RJC	Reject
401	RPI	Runway Point of Intercept
402	RPM	Rotations per Minute
403	ROFZ	Runway Obstacle Free Zone
404	RMI	Radio Magnetic Indicator
405	RNAV	Area Navigation
406	RNP	Required Navigation Performance
407	ROC	Rate Of Climb
408	ROC	Required Obstacle Clearance
409	RPM	Revolutions Per Minute
410	RPS	Radar Position Symbol
411	RRPM	Rotor Rotations per Minute
412	RSA	Runway Safety Area
413	RSAF	Republic of Singapore Air Force
414	RSC	Runway Surface Condition
415	RSI	Remote Status Indicato
416	RSRS	Reduced Same Runway Separation
417	RTCA	Radio Technical Commission for Aeronautics
418	RVR	Runway Visual Range
419	RVSM	Reduced Vertical Separation Minimum
420	RWR	Radar Warning Receiver
421	RWY	Runway
422	SADL	Situational Awareness Data Link
423	SAF	Sustainable Aviation Fuel
424	SAR	Search and Rescue, Synthetic Aperture Radar
425	SARPS	Standards and Recommended Practices (ICAO)
426	SAT	Site Acceptance Test (see also FAT and RAT)
427	SATCO	Senior Air Traffic Control Officer
428	SATCOM	Satellite Communication
429	SATNAV	Satellite Navigation
430	SATSE	State Air Traffic Services Enterprise
431	SCN	Secondary Crash Net
432	SDD	Situation Data Display
433	SEOL	Simulated engine-off landing
434	SELCAL	Selective Calling System
435	SES	Single European Sky
436	SESAME	Single European Sky ATM Master Plan
437	SESAR	Single European Sky ATM Research
438	SFL	Sequencing Flashing Light
439	SFO	Simulated Flameout Operation
440	SI	Selective Interrogation
441	SIAP	Standard Instrument Approach Procedure
442	SID	Standard Instrument Departure
443	SIF	Selective Identification Friend or Foe
444	SIGMET	Significant Meteorological (Information) Report
445	SILs	Sector Inbound Lists
446	SIM	Simulator
447	SKYGUIDE	Air Traffic Control of Switzerland
448	SL	Sea Level
449	SLB	Side lobe Blanking
450	SLC	Side lobe Cancellation
451	SLOC	Slovenia Control
452	SM	Statute Mile
453	SMR	Surface Movement Radar
454	SOF	Supervisor of Flying
455	SOW	Statement of Work
456	SRC	Safety Regulation Commission (EUROCONTROL)
457	SRU	Safety Regulation Unit (EUROCONTROL)
458	SSR	Secondary Surveillance Radar
459	STAR	Standard Arrival Route or Standard Terminal Arrival Route
460	STARS	Standard Terminal Automation Replacement System
461	STB	Stop Bar
462	STCA	Short Term Conflict Alert
463	STD	Synthetic Training Device
464	STDMA	Self-organising Time Division Multiple Access (known as VHF digital link - Mode 4)
465	STNA	Service Technique de la Navigation Aerienne
466	STO	Short Take-Off
467	STOVL	Short Take-Off and Vertical Landing
468	STOL	Short Take-Off and Landing
469	STRATFOR	Eurocontrol Statistics and Forecasts Service
470	SUA	Special Use Airspace
471	SV	Supervisor
472	SVFR	Special Visual Flight Rules
473	SWT	Switch
474	SWY	Stopway
475	SYSCO	System Coordination – Data Exchange and Coordination
476	TA	Terminal Airspace
477	TAA	Terminal Arrival Area
478	TAAM	Total Airspace and Airport Modeller
479	TACAN	Tactical Air Navigation (System)
480	TACS	Theater Air Control System
481	TACTICOS	Tactical Information and Command System
482	TAF	Terminal Aerodrome/Area Forecast
483	TAIS	Tactical Airspace Integration System (US Army)
484	TAIS	Tactical Air Intelligence System
485	TAP	Target Acquisition Protocol
486	TARMAC	Taxi and Ramp Management and Control
487	TAS	Terminal Airspace System
488	TAS	True Air Speed
489	TAWS	Terrain Avoidance and Warning System
490	TCAS	Traffic alert and Collision Avoidance System
491	TCDS	Type Certificate Data Sheet
492	TCH	Threshold Crossing Height
493	TCL	Thrust Control Lever or Taxi Center Lights
494	TDW	Tower Display Workstation
495	TDZ	Runway Touchdown Zone Lighting
496	TDZE	Touch Down Zone Elevation
497	TERPS	US Standard for Terminal Instrument Procedures
498	TFDM	Terminal Flight Data Management
499	TFDPS	Tower Flight Data Processing System
500	TFM	Traffic Flow Management
501	TFR	Temporary Flight Restriction
502	TH	True Heading
503	TID	Touch Input Device
504	TIS	Traffic Information System
505	TLOF	Touchdown and Lift-off Area
506	TM	Traffic Management
507	TMA	Terminal Control Area
508	TOC	Top Of Climb
509	TOD	Top Of Descent
510	TODA	Take-off Distance Available
511	TODAH	Take-off Distance Available for Helicopter
512	TOP	Take-Off Power
513	TOR	Terms of Reference, or Tornado aircraft
514	TORA	Takeoff Run Available
515	TOWSIM	Tower Simulator
516	TRACON	Terminal Radar Approach Control
517	TRH	Thrust Reduction Height
518	TSO	Technical Standard Order
519	TSTC	Texas State Technical College
520	TT	True Track
521	TVOR	Terminal VOR
522	TWEB	Transcribed Weather Broadcast (USA for ATIS)
523	TWR	Control Tower or Thrust to Weight Ratio
524	TWY	Taxiway
525	TXC	Taxiway Centreline Lights
526	TXE	Taxiway Edge Lights
527	UA	Unmanned Aircraft
528	UAC	Upper Area Control Centre
529	UAM	Urban Air Mobility
530	UAS	Unmanned Aircraft Systems
531	UAT	Universal Access Transceiver
532	UAV	Unmanned Aerial Vehicle
533	UCAV	Unmanned Combat Aerial Vehicle
534	UDF	Ultra High Frequency Direction Finding
535	UEI	Units, Equipment, Installations
536	UFA	UFA, Inc., the world's premier developer of Air Traffic Control simulation systems
537	UHF	Ultra High Frequency (300MHz to 3 GHz)
538	UIR	Upper Flight Information Region
539	UKCAA	United Kingdom Civil Aviation Authority
540	UMASS	University of Massachusetts
541	URET	User Request Evaluation Tool
542	USAF	United States Air Force
543	UTA	Upper Traffic Area
544	V2	Takeoff speed. The speed at which the aircraft may safely be climbed with one engine inoperative
545	VAR	Magnetic Variation
546	VASI	Visual Approach Slope Indicator
547	VASIS	Visual Approach Slope Indicator System
548	VCS	Voice Communication System
549	VCCS	Voice Communication Control System
550	VCOA	Visual Climb Over Airport
551	VDF	Very High Frequency Direction Finding
552	VDGS	Visual Database Generation System
553	VDL-4	VHF digital link Mode 4 (see also STDMA)
554	VDU	Visual Display Unit
555	VFS	Vertical Flight Society
556	VFOW	Vertical Field of View
557	VFR	Visual Flight Rules
558	VHF	Very High Frequency (3 to 300MHz)
559	VLF	Very Low Frequency
560	VMC	Visual Meteorological Conditions
561	VOLMET	Meteorological Information for Aircraft in Flight
562	VOR	VHF Omni-directional Receiver
563	VORTAC	VOR -TACAN combination
564	VREF	1.3 times the stalling speed of the aircraft in the stated landing configuration and at the prevailing aircraft weight
565	VRS	Vortex Ring State
566	VS	Stall speed, defined as the minimum steady flight speed at which the airplane is controllable
567	VSBY	Visibility
568	VSP	Vertical Speed
569	VSTOL	Vertical Short Take-Off and Landing
570	VTC	Visual Terminal Chart
571	VTC	Virtual Training Centre
572	VTOL	Vertical Take-Off and Landing
573	VTOSL	Vertical Take-Off and Short Landing
574	VTS	Vehicle Tracking System
575	Vtoss	Take-off safety speed
576	Vy	Optimimum climbing speed
577	Vz	Rate-of-climb
578	WA	Wind Angle
579	WAAS	Wide Area Augmentation System
580	WAM	Wide Area Multilateration
581	WBS	Work Break-down Structure
582	WCA	Wind Correction Angle
583	WDI	Wind Direction Indicator
584	WGS	World Geodetic System
585	WIAS	Wetter Informations- und Anzeigesystem (German)
586	WP	Waypoint
587	WS	Work Station
588	WTC	Wake Turbulence Category
589	WTWS	Wake Turbulence Warning System
590	WX	Weather
591	WXR	Weather Radar Transceiver