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