Slightly off topic
I had an airprox once after flying a microlight off a beach. I filed, as it scared me, and was definitely not my fault.
I put my altitude down as xxxft QNH. The Airprox board phoned me and asked what QNH setting I was using and where I obtained it from.
I explained that I'd set it to read zero on the beach, halfway between the high and low tide marks. The airprox board inspector had clearly never had that answer before, and it confused him!
G
Had a similar incident from an airprox filed against me many years ago, in essence the inspector Group Capt such and such was trying to plant the blame firmly on me for exceeding 250 kts IAS below 10000' outside controlled airspace.
He stated that from radar recordings clearly my TAS was approaching 300 kts which is a breech of ANO.......oh really I replied !!!! that airprox was filed under B.
