If you thought runway numbers signified the number of
runways at an airport, you would be wrong.
Runways are numbered based on the magnetic azimuth
direction (compass bearing) they are oriented to. Every runway has two
numbers, one at each end. These two numbers are the reciprocal of each other
(180 degrees opposite). The numbers are determined by rounding the compass
bearing to the nearest 10 degrees and removing the last digit. (Runways are
numbered from 1 to 36, rather than 10 to 360).
By using this method, you end up with two numbers which
differ by 18 (since they are 180 degrees opposite from one another). So, for
example, if the compass heading of a runway is 93 degrees, you would round it
down to 90 and drop the last digit, leaving you with 9. This runway would
then be named Runway 9-27. When
taking off from or landing on runway 9, a plane is heading east.
If there is more than one runway pointing in the same
direction (parallel runways), each runway is identified by appending left
(L), center (C) and right (R) to the number to identify its position (when
facing its direction).
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| PLANE IS LANDING TO THE WEST |
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