Abbreviations and Acronyms

The abbreviations and acronyms listed below may be used throughout Transport Canada’s flight crew written examinations.

AAE above aerodrome elevation
ACA Arctic Control Area
ACAS airborne collision avoidance system
ACC area control centre
AD airworthiness directive
ADF automatic direction finder, or automatic direction-finding equipment
ADIZ air defence identification zone
AGL above ground level
A.I.P. aeronautical information publication
AIRMET short-term meteorological information
AME aircraft maintenance engineer
APU auxiliary power unit
ARCAL aircraft radio control of aerodrome lighting
ASDA accelerate stop distance available
ASI airspeed indicator
ASL above sea level
ASR airport surveillance radar
ATC air traffic control
ATF aerodrome traffic frequency
ATIS automatic terminal information service
ATPL airline transport pilot licence
ATS air traffic services
AWOS automated weather observation systems
BC back course
BFL balanced field length
C Celsius
CAP Canada Air Pilot
CARS community aerodrome radio station
CARs Canadian Aviation Regulations
CAS calibrated airspeed
CAT clear air turbulence
CDI course deviation indicator
CFI chief flying instructor
CFS Canada Flight Supplement
C of A certificate of airworthiness
C of G centre of gravity
C of P centre of pressure
C of R certificate of registration
CMNPS Canadian minimum navigation performance specifications
CMNPSA Canadian minimum navigation performance specifications airspace
CP critical point
CPL commercial pilot licence
CRFI Canadian Runway Friction Index
cu. ft. cubic feet
CVFR controlled VFR flight
CVR cockpit voice recorder
CZ control zone
DF direction finder
DH decision height
DME distance measuring equipment
DOT Department of Transport
DR dead reckoning
DVFR defence visual flight rules
EAT expected approach time
EFC expected further clearance time
EGT exhaust gas temperature
ELT emergency locator transmitter
EPR engine pressure ratio
ESCAT emergency security control of air traffic
ETA estimated time of arrival
ETD estimated time of departure
ETOPS extended range twin-engine operations
EWH eye-to-wheel height
FAA Federal Aviation Administration (U.S.)
FD upper level wind and temperature forecasts
FDR flight data recorder
FIG Flight Instructor Guide
FIR flight information region
FL flight level
FMS flight management system
FPD freezing point depressant
fpm feet per minute
FSS flight service station
ft. feet
g accelerating force of gravity (32 ft./sec/sec)
gal. gallon(s)
GASA geographic area safe altitude
GFA graphic area forecast
GNSS global navigation satellite system
GP glide path
gph gallons per hour
GPS global positioning system
G/S ground speed
HAA height above aerodrome
HAT height above touchdown
HE Enroute High Altitude chart
HF high frequency
HF AM/SSB high frequency amplitude modulation/ single side band
hp horsepower
hPa hectopascal
h hour
HSI horizontal situation indicator
IAF initial approach fix
IAS indicated airspeed
ICAO International Civil Aviation Organization
IFR instrument flight rules
ILS instrument landing system
IMC instrument meteorological conditions
imp. imperial
in. inch(es)
in. lb. inch pound
in. Hg inches of mercury
INS inertial navigation system
ISA International Standard Atmosphere
ISO International Organization for Standardization
kg kilogram(s)
kHz kilohertz
km kilometer(s)
kt. knot(s)
LAHSO land and hold short operations
lb. pound(s)
L/D ratio lift/drag ratio
LDA landing distance available
LEMAC leading edge of mean aerodynamic chord
LF/MF low frequency/medium frequency
LO Enroute Low Altitude chart
M magnetic
MAC mean aerodynamic chord
MAP missed approach point
mb millibar(s)
MC medical certificate (formerly LVC)
MDA minimum descent altitude
MEA minimum en route altitude
MEL minimum equipment list
METAR aviation routine weather report
MF mandatory frequency
MHz megahertz
MNPS minimum navigation performance specifications
MNPSA minimum navigation performance specifications airspace
MOCA minimum obstruction clearance altitude
MP manifold pressure
MPH mile(s) per hour
MRA minimum reception altitude
MSL mean sea level
MVFR marginal visual flight rules
N1/Ng gas generator turbine RPM
N2/Np power turbine RPM
NAVAID navigation aid
NDB non-directional beacon
NM nautical mile(s)
NOTAM notice containing aeronautical information
NORDO no radio
OAT outside air temperature
OBS omnibearing selector
PAPI precision approach path indicator
PAR precision approach radar
PIC pilot-in-command
PIREP pilot weather report(s)
PNR point of no return
pph pounds per hour
PPL private pilot licence
psi pounds per square inch
PSR primary surveillance radar
radar radio detecting and ranging
RAIM receiver autonomous integrity monitoring
RAMO regional aviation medical officer
RCC rescue coordination centre
RCO remote communications outlet
RMI radio magnetic indicator
RNAV area navigation
rpm revolutions per minute
RPP recreation pilot permit
rrpm rotor revolutions per minute
RVR runway visual range
rwy runway
SAE Society of Automotive Engineers
SAR specific air range
SELCAL selective calling system
SGR specific ground range
SID standard instrument departure
SIGMET significant meteorological information
SM statute mile(s)
SSR secondary surveillance radar
STAR standard terminal arrival
STOL short take-off and landing aircraft
SVFR special VFR flight
T true
TACAN tactical air navigation aid
TAF terminal aerodrome forecast
TAS true airspeed
TC Transport Canada
TCA terminal control area
TCAS traffic alert and collision avoidance system
TCU terminal control unit
TDZ touchdown zone
TEMAC trailing edge of mean aerodynamic chord
T/O takeoff
TODA take-off distance available
TORA take-off run available
TOT turbine outlet temperature
TSB Transportation Safety Board of Canada
UHF ultrahigh frequency
UNICOM universal communications
U.S. United States
UTC Co-Ordinated Universal Time
VASIS visual approach slope indicator system
VDF VHF direction-finding service
VFR visual flight rules
VHF very high frequency
VLF very low frequency
VMC visual meteorological conditions
VNC VFR Navigation Chart
VOLMET In-flight meteorological information
VOR VHF omnidirectional range
VORTAC combination of VOR and TACAN
VOT VOR receiver test facility
VFR OTT VFR over-the-top
VSI vertical speed indicator
VTA VFR Terminal Area Chart
WAC World Aeronautical Chart
WP waypoint
Z Co-Ordinated Universal Time (UTC)