However... Last night went for an evening flight and lost GPS lock at 5000ft
I also tried using my IPad on a commercial flight back from Nice. I have the track plotted beautifully up to 10,000ft, but then it disappears until the descent into Gatwick.
Anyone know why the lock gets worse with altitude?
I still have a complete Skydemon track from a Lufthansa Canadair RJ flight from Toulouse to Munich... Max speed 475kts, max altitude 36484ft, distance 595nm, 1 hour 36 minutes... My iPad was either in the window frame or on the seat back table about half way back down the cabin, and it never lost position - so it doesn't always lose lock with altitude!
Andy