iPad expansion during Garmin Pilot use
I use my iPad in my unpressurized T310R and above 12,000 ft to 17,000 ft cabin altitude the front of the iPad will expand about 1/8 of an inch out of the case and become very warm. After the flight and after descending below 10,000 ft it will return to normal. Although it gets hot, I do not get an overheat warning. Apple Tech support says it is not tested above 10,000 ft. I am a retired airline pilot and we had iPad certified for use in the cockpit which I find interesting if they are not tested to operate above 10,000 as in a depressurization.