Originally Posted by
MechEngr
Maybe SKLM is an unreliable narrator.
Other random samples on the same site show fairly consistent runway heading errors, best seen on airports with long runways (
London Heathrow, for example).
As an alternative to GC calculators, a quicker way to get a reasonably precise true heading for a runway is simply to use the ruler on Google Earth. For example EGLL 27R is oriented at 267.3° true, according to the above website, whereas the actual value is 269.7°.
