How many times do certified aircraft do bits fall off them?
Those cowls that have come open numerous times but the aircraft still flies and to my knowledge the sum total of the fix for it is paper work stating that all pilots must check the cowls before departure.
And as he seem to be a bit of a professional he has already changed his personal SOP's to check his gimp mod to be able to fly.
And before you all get upset a gimp mod is a common term in the disable flying community for any mod to allow someone without the full quota of limbs and any other bits that we would normally use.