(USED
IN ECAR 139)
Abbreviations
ACN Aircraft classification number
aprx Approximately
ASDA Accelerate-stop distance available
ATS Air traffic services
cd Candela
C Degree Celsius
CBR
CIE Commission Internationale de
l’Éclairage
cm Centimetre
DME Distance measuring equipment
EAC Egyptian advisory circulars
ft Foot
ILS Instrument landing system
IMC Instrument meteorological
conditions
K Degree Kelvin
kg Kilogram
km Kilometre
km/h Kilometre per hour
kt Knot
L Litre
LDA Landing distance available
m Metre
max Maximum
mm Millimetre
mnm Minimum
MN Meganewton
MPa Megapascal
NM Nautical mile
NU Not usable
OCA/H Obstacle clearance altitude/height
OFZ Obstacle free zone
PCN Pavement classification number
RESA Runway
end safety area
RVR Runway visual range
TODA Take-off distance available
TORA Take-off run available
VMC Visual meteorological conditions
VOR Very high frequency omni
directional Radio range
Symbols
° Degree
= Equals
¢ Minute of arc
m Friction coefficient
> Greater than
< Less than
% Percentage
± Plus or minus