Both barometric pressure altitude (assuming the standard
atmospheric pressure of 1013.25 mb at mean sea level) and GPS altitude are
displayed by FS. Unfortunately only GPS altitude is checked automatically
against airspace height limits, not pressure altitude, which is required by the
CIVL Sporting Code. The scorekeeper has to manually adjust the GPS altitude with
the difference between pressure altitude and GPS altitude to determine if the
pilot has violated airspace.

FS has not been updated since the 2009 Worlds in Laragne.