. re: suspension strut pins .... whether loose , wrong size , or retaining clips missing I cannot see them falling out in flight ..... they are carrying +20,000 lbs and you could not drive them out with
Not so fast.
Constant vibration with loading and un-loading of the strut pin(s) could certainly move it sideways, slowly but surely.
I sure as hell would not bet my rotor or my life on a guess the pin would not move if not secured.