Originally Posted by
gofast
Well, to begin with...US airspace is sovereign and one of the few legitimate functions of government is to protect it's citizens, including controlling what goes on in it's airspace. Efforts to secure the flight deck of passenger aircraft transiting US airspace is not colonialism run a muck, it is the keystone to insuring that hijackers don't get access to the flight deck. .
The FAA could make such a rule, but the likelihood of it being enforced is slim. Someone could file a complaint after landing, then the FAA would investigate and possibly levy a fine against that carrier.
It kind of sucks that my friend's friend is no longer flying the SQ A340 to the US, otherwise I would have had a nice ride up in the flight deck for his flight shift.