While I'm a low time pilot, I have extensive experience driving vehicles on the ramp and movement areas of a large international airport. Unless working an aircraft parked at its gate (belt loaders, baggage trains, fuel trucks/bowsers, catering trucks etc.), driving a vehicle beneath any part of the aircraft was a big "no-no". Once an aircraft had left its gate, only the tug was authorized to be below a part of the aircraft (the nose). I can't imagine how any non-emergency ramp vehicle, much less another aircraft, would be allowed to pass beneath an aircraft. But then, I've been away from the game almost eight years now ... maybe things have changed.
Cheers,
Grog
Last edited by capngrog; 6th Apr 2020 at 23:35.
Reason: Removed questions answered in the video