A colleague (and former SBP) from the late 80's did a stint as a mercinary in Qatar after he left the employ of HM RAF.
Walking past an operational Comet/Nimrod he noticed that the machine only had 3 engines installed.
.......................
One day due to heavy rain I managed to perform the daily inspection on an Islander in record quick time.
Same colleague, wearing his Senior Pilot hat rang me after I'd arrived back at the airport and said that he'd had a call from BASI (The Australian Bureau of Air Safety Investigation) enquiring of an Islander exhaust that had detached from an aeroplane and thudded into a garden near the lady of the house who was gardening.
I checked the aircraft, it had stopped raining by now, and sure enough the exhaust stub was missing. It had detached the previous day when my colleague was flying.
Boy did I learn a good lesson about not rushing D.Is.