Tony
There is not a lot else to say, except that Westland said that was the only Wessex blade failure they had heard of. There was no technical reason found for the failure. Sods law that of the hundreds of Wessex blades in service, we got that one.
Nick was on the approach to landing when the failure happened, he said that the vibration was so great, that he just drove the aircraft to the ground ,there was only one passenger, a local, who was last seen breaking the 4 minute mile into the medical centre. To my knowledge he was unhurt.
If the failure had happened in the cruise it may have been a different outcome.
As I said, we chopped off the blade from the brake to the tip, and Tony Hobdel mounted it on a piece of polished Nigerian wood. The aircraft was a wright off, so we could salvage the data plates and mounted them on the wooden display.
The only other Westland blade failure I have heard of, was an RAF search and rescue Whirlwind 10 at Leconfield in the sixties, others may know different.