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Aviation
Aviation, aircraft and air-traffic acronyms explained.
VORTAC
VHF Omni-directional Range/Tactical Air Navigation
VOT
VOR Test Facility
VR
VFR Military Training Route
VREF
The reference landing approach speed, usually about 1.3 times Vso plus 50 percent of the wind gust speed in excess of the mean wind speed.
VSO
The stalling speed or the minimum steady flight speed in the landing configuration at maximum weight.
VTF
Vector to Final
VV
Vertical Visibility
VVI
Vertical Velocity Indicator
VY
Speed for best rate of climb
VYI
Instrument climb speed, utilized instead of VY for compliance with the climb requirements for instrument flight
WA
AIRMET
WAAS
Wide Area Augmentation System
WFO
Weather Forecast Office
WGS-84
World Geodetic System of 1984
WMO
World Meteorological Organization
WMS
Wide-Area Master Station
WMSC
Weather Message Switching Center
WMSCR
Weather Message Switching Center Replacement
WP
Waypoint
WRA
Weather Reconnaissance Area
WRS
Wide-Area Ground Reference Station
WS
SIGMET
WSO
Weather Service Office
WSP
Weather Systems Processor
WST
Convective Significant Meteorological Information
WW
Severe Weather Watch Bulletin
AIS
Aeronautical Information Service
service established in support of international civil aviation
AOC
air operator certificate
approval by national aviation authorities to operate aircraft for commercial purposes
ASN
Aviation Safety Network
online database for tracking of aviation incidents and safety-related information
CAT
City Airport Train
airport rail link running non-stop on the S7 route (Vienna S-Bahn) between Wien Mitte railway station and Vienna International Airport
CIC
combat information center
room in a warship or aircraft that functions as a tactical center
CRI
Certification Review item
aviation document
FMG
Flughafen München GmbH
operator of Munich Airport
GGG
East Texas Regional Airport
airport serving the Greater East Texas Area
IAC
Interstate Aviation Committee
executive body of the Civil Aviation and Airspace Use Council of the Commonwealth of Independent States (CIS)
IAS
indicated airspeed
airspeed read directly from the airspeed indicator (ASI) on an aircraft
IATA
International Air Transport Association
international trade association for airlines
IATA
IATA airport code
three-letter identifier for designating airports, railway stations or cities (for airlines, see P229)
ICAO
ICAO airport code
four-character alphanumeric identifier for designating airports (for airlines, see P230)
LCC
low-cost airline
airline with generally lower fares