Hi Keg, same airline and same terminal as you, in fact about 10-12years ago we both flew quite a few times together on the 76.
Part of the OP question was "can anyone shed some light as to why customs prohibit crews of international flights to do a handover at the aircraft?"
Yes in SIN you can waite by the aerobridge exit to see the crew or meet them by chance in the terminal, but once you are through security at the departure lounge, that is it. In this case I've only been allowed onto the aircraft when the inbound crew is off. Without wishing to be seen as pedantic, that is not a handover on the aircraft.
Last edited by Offchocks; 7th Apr 2012 at 21:56.