but a secure FD door opening and closing unnecessarily is seen as a security risk.
auntyice, so the current procedures for allowing cabin crew access to the flight deck and/or crew members having to go to the washroom are inadequate, is that what you are saying?
Also, why is it only the UK and USA governments that apply these rules - does something magic happen to non UK aircraft when they leave UK international airspace?
When's the last time anyone had an ATCO on the flightdeck for an observation trip?