Englishal
I am aware of the procedures as they are written, my point is only that if Heathrow are landing 27L for example, you would be flying straight towards and then over central London whilst not talking to anyone. Thoughts of New York would inevitalby spring to mind. I don't think sqwarking 7600 would make any difference, because if a hijacker knows how to turn a transponder off, then he certainly knows how to select 7600. You only need to look at what happened to the Go Flight over France to see how concerned people are about losing contact with aircraft.
[ 27 October 2001: Message edited by: Slippers ]
[ 28 October 2001: Message edited by: Slippers ]