Government of Canada navigation bar

Symbol of the Government of Canada

Primary site navigation bar

Abbreviations and Symbols

(used in Aerodrome Standards and Recommended Practices)

Abbreviations

AAE Above aerodrome elevation
AAS Airport Advisory Service
ACN Aircraft classification number
ALR Aircraft loading rating
APAPI Abbreviated precision approach path indicator
aprx Approximately
ARCAL Aircraft radio control of aerodrome lighting
ARP aerodrome reference point
ASDA Accelerate stop distance available
ATF Aerodrome traffic frequency
ATS Air traffic services
C Degrees Celsius
CAT I Category I
CAT II Category II
CAT III Category III
CBR California bearing ratio
cd Candela
CIE Commission Internationale de l'éclairage
cm Centimetre
DME Distance measuring equipment
E East
EWH Eye to wheel height
FAA Federal Aviation Administration (USA)
FOD Foriegn object damage
ft Foot
GNSS Global Navigation Satellite System
GPS Global Positioning System
GS Glideslope
HAA Height above aerodrome
HIAL High intensity approach lighting
ICAO International Civil Aviation Organization
IFR Instrument flight rules
ILS Instrument landing system
IMC Instrument meteorological conditions
JBI James Brake Index
K Degree Kelvin
kg Kilogram
km/h Kilometre per hour
km Kilometre
kt Knot
L Litre
LDA Landing distance available
m Metre
M Magnetic
MALSR Medium intensity approach lighting system with runway alignment indicator lights
max Maximum
MF Mandatory frequency
min Minimum
MLS Microwave landing system
mm Millimetre
MN Meganewton
MPa Megapascal
MSL Above mean sea level
N North
NM Nautical mile
NOTAM Notices to airmen
NU Not usable
OCA/H Obstacle clearance altitude/height
ODALS Omni-directional lighting system
OFZ Obstacle free zone
OLS Obstacle limitation surface
PAPI Precision approach path indicator
PCN Pavement classification number
PLR Pavement load rating
RCR Runway condition report
RESA Runway end safety area
RILS Runway identification lights
RSC Runway surface condition
RVR Runway visual range
S South
secs Seconds
SIRO Simultaneous intersecting runway operations
T True
TC Transport Canada
TDZ Touchdown zone
TDZE Touchdown zone elevation
TDZL Touchdown zone lighting
TODA Take-off distance available
TORA Take-off run available
TP Transport Canada publication
VFR Visual flight rules
VMC Visual meteorological conditions
VOR Very high frequency omnidirectional range
W West

Symbols

° Degrees
> Greater than
< Less than
- Minus
´ Minute of arc
% Percentage
± Plus or minus
+ Plus
´´ Seconds of arc
Date modified:
2010-05-21