Sods Law - you depart on a flight to the Elgin Platform, not intending to shut down and plan to be back on the ground at ABZ before Storm Otto reaches its peak. However a tail rotor gearbox chip light comes on and you must shut down on deck as departure back to shore is not possible. Three of the five main rotor blades are subsequently snapped off during the storm. I wonder whether they carried blade cuffs and tie down ropes - probably not as they would be bulky and would take up baggage space.
I can't understand why the AAIB are involved. Both an accident and a serious incident have this definition of when they occur for the purpose of requiring notification to the AAIB:
The H175 certainly wasn't boarding anyone with the purpose of flight because it had a tail rotor chip light which precluded flight.......takes place between the time any person boards the aircraft with the intention of flight until such time as all such persons have disembarked
Maybe I'm just being an old and pernickety lower deck lawyer......