Peter
I had a share in a Mooney we had one idiot pilot member who crashed the aircraft not once but twice.
The first bang was attempting to land on a grass airfield too long too fast in france which resulted in a bent prop.
Not wishing to cut his holiday short to Corsica the fool bent the prop straight and continued his European tour vibrating around the skies with total disregard to the fact that 3/4s of the aircraft did not belong to him.
By the time the **** got back we had no end of avionic and electrical problems due to flying with continuous vibrations
So I can well understand how a vertical descent at high speed into the ground can damage sensitive and delicate electronics
Pace