On a ATL-LHR flight the other day I noticed that the Safety on Board cards said:
"Global Positioning System (GPS) and intentionally transmitting devices e.g. radio pagers, satphones, radio transmitters [blah blah] must not be used at any time."
Now I can understand that most of the gadgets listed might cause interference and therefore shouldn't be used, but GPS?
AFAIK a hand-held GPS device is passive with signals going from the satellite to the receiver only, therefore doesn't present any more risk of interference than a mobile or lap-top in flight mode, which are permitted.
Or do VA fly some magical route that they don't want anyone to know about?