Well, if we are going to dig into IATA and suchlike civvie stuff ...
I once delivered a Sea King from A to B in the UK, and boarded a civvie flight to get home, with my flying kit in hold baggage, and the LSJ in hand baggage.
At check-in:
BA employee: "Do you have any of these prohibited goods?" - shows list including radio transmitters, compressed gases, explosives, firearms.
Me: "Yes, all of them I think"
BA Employee: "Thank you sir, you are departing from Gate 5 which will open at XX. Have a pleasant flight."
I have never figured out whether she was thick as mince or having a really good attack of commonsense.
Sven
still seeking employment