I found this image on another forum. I wonder what happened?
One man's guess:
Mechanic's post engine maintenance checklist:1) All tools accounted for.............. verify.
2) Cowling closed and secure......... check.
3) Cowling screws........................ tighten.
4) Cowling closed and secure......... check again.
Mechanic's post engine maintenance checklist from that day:1) All tools accounted for............ verify.
2) Cowling closed and, uh............
3) get distracted and interrupt routine........ check.