I once broke a fingernail whilst opening the tech log.......
Plus a "few other things".
The most scary, in retrospect, was a blade spar failure on a metal bladed Puma HC1 during my OCU course, nearly 30 years ago.
We had a BIM (Blade Integrity Monitor) caption light up at 100ft agl during a low level Navex. I put out a PAN call and landed in a field, which just happened to have a phone box immediately adjacent to it. As the PAN call hadn't been replied to, I was told to stay in the pilots seat and keep the radio on, whilst my QHI and the student crewman went outside to check it out. The aircraft was renowned for false BIM warnings prior to "Plastic blades". The QHI and crewman returned after a short while, having looked at the blades and phoned the engineers at base for advice. The QHI said it was OK, just another false alarm, but we were going back to base. The QHI flew back.
As I got out of the aircraft, I was horrified to see a red BIM (u/s) on a main blade! It wasn't a false indication in the cockpit, it was
real. I walked quickly in to the line office and asked WTF was going on!
Some days on, I was quietly taken to one side by the line chief and showed a section of the blade he had been given, to show the damage. There was less than third of the main spar left intact, the entire rear of the D section was gone, only the front edge remained.........
Another minute of flying time and I might not have been here.
I got a sincere and contrite private apology from the QHI.