Originally Posted by Doug Eves
Hello Airhound. I thought all GA aircraft had to have a compass? Anyway, not sure what brand I have but it is mounted in panel and not the type that sits on the dash to obstruct your view. I have nothing on my dash to obstruct my forward view. I had it swung at an avionics shop. One guy stood way out in front of the aircraft with some type of gun pointing it at the plane while the other guy made adjustments to the compass. Plane was running and he would move to different locations on the ramp while we realigned the plane with him. Since then I have simply checked it on a compass rose at a local airport. Apparently the plane is supposed to be running during this high tech maneuver.
Post 37 explains requirements and I'm good with it. I'm thinking when we know the engine driven electricity has stopped, for those with EFIS and no standby compass or HH GPS, its best to be on the ground by the time the backup battery craps out too!
Even the most proficient orienteers/pilots can become disoriented/temporarily lost, especially, if flying over unfamiliar/snow covered terrain or maneuvering around clouds etc....