Many moons ago An RAF helicopter from Odiham agreed to drop off a guy going on leave at nearby Speke airport, when it was still operational.
They were worried about getting the landing fees for what was really an unofficial drop-off, so hover taxied in, then sitting in the hover the guy jumped out and the crewman passed his bag down to him.
The helicopter then departed and lo and behold an invoice arrived at Odiham for the landing fees, the crew pointed out It hadn’t physically landed, Speke looked at it and realised It hadn’t so had to cancel the fee.