Just for interest sake, several times I've used a handheld mapping GPS at my window seat. (It works about 95% of the time) Air Canada crew & a few European (LH,KL) never question it, if anything they ask me if we're on time! (even a few pilots have wanted to see it) However, on several US airlines, I've been told to turn it off...it can't be used etc. I have heard conflicting stories: FAA says it's fine, does not transmit OR "no way" As it is a receiver, it doesn't appear to be a problem, but ???
Any thoughts?