Glossary Of Aviation
Terms & Abbreviations
Aviation related terms and definitions used in association with civil flight
obtained from the Code of Federal Regulations, Federal Aviation Regulations, and
many other sources. Cross references are in CAPITAL letters.
AAIB: Air Accidents Investigation Branch (UK).
ABS: automatic braking system.
ADF: automatic direction finding equipment.
AFIS(O): Aerodrome Flight Information Service (Officer).
AFS: Aerodrome Fire Service.
agl: above ground level.
AIC: Aeronautical Information Circular.
AME: Aviation Medical Examiner.
amsl: above mean sea level.
APU: auxiliary power unit (normally used during engine start).
ASI: airspeed indicator.
ATC: Air Traffic Control.
ATCC: Air Traffic Control Centre.
AVGAS: aviation gasoline.
BCAR: British Civil Airworthiness Requirements (UK).
BGA: British Gliding Association (UK).
BMAA: British Micro light Aircraft Association (UK).
CAA: Civil Aviation Authority (UK).
CAP: Civil Aviation Publication (UK).
CFIT: Controlled Flight Into Terrain.
CG: Centre of Gravity.
Cold Shock: The loss of body functions, or death, immediately on sudden
immersion in very cold water. See also Hypothermia and Cacogenic Shock.
Controlled Airspace: Airspace closed to unauthorized aircraft (and see TPA).
CVR: Cockpit Voice Recorder.
°C, F, M, T: degrees Celsius, Fahrenheit, magnetic, true.
D&D Cell: Distress and Diversion Cell (at ATCC listening out on 121.5Mhz and
243Mhz).
Dew point: The OAT at which the air mass reaches saturation point.
DME: Distance Measuring Equipment.
Endurance Speed: The speed at which an aircraft’s total drag is at a minimum and
thus requires minimum thrust and fuel consumption to maintain level flight.
ETA: estimated time of arrival.
ETD: estimated time of departure.
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