Hand held GPS in back of airliners.
Dan Winterland points out that a hand-held GPS in the back of an airliner is going to be inaccurate.. fairly obivous, I guess, but it is it allowed?
The reason I ask is there is a letter in this months Pilot magazine in which a reader says he turned on his Garmin III unit next to a window and was told to turn it off by cabin crew as it would interfere with the navigation equipment. He says "Am I missing something, or do radios in airliners work differently from those in light aircraft?" In other words I guess, how is it acceptable in a G/A aircraft and not in an airliner? Any comments?