Yes, that should be possible. However, I doubt whether this is allowed. Unless of course you own the plane.

PS: By the way, attaching it to the outside of the aircraft is not recommended either!

Hello, I have already mounted the suction cup on the outside of the aircraft. It works and holds perfectly.

Works great on an aeroplane as long as you don't fly an F/A 18. It holds on a DA20 without any problems