mavlink/mavlink — pull request #298 by LorenzMeier (2014-12-06 17:29:35+00:00)
Title: Fixed altitude comments to AMSL, as that is what all adopting projects

@tridge This is a comments-only change. We (APM, PX4) have been using AMSL, but MAVLink referred to as WGS84, which was confusing a few people.