Back in the early 1960;s a pipe dropped out of the bottom of DC4 outboard engine that I witnessed and the engine subsequently feathered. Even as young child of about 5, I was a window seat lover ! My Mum was next to me who I pointed this out to, who called CC ,who subsequently called F/E who wondered back and said to my Mum apparently “oh I wondered what happened”. These things happen I guess.
Cheers
Mr Mac