Maybe the answer to the mystery.
I've been told the claim was for £10 million claculated on the Cessna pilot earning more than a million pounds a year.
If the family could prove the military caused the crash they would have got £10 million. If the military could prove the crash was nothing to do with the Sea King the family would have got nothing. The Sea King might have spooked the Cessna pilot but he reacted way OTT and instead of just stopping tried a go around and screwed up so a 50/50 split £5million was a compromise and nobody has to take a big all or nothing risk trying the case in court.
At first the family tried to claim the Sea King downwash blew the Cessna off the runway but that idea was dead in the water when even their own expert agreed with the military expert it was too far away for that.
Their lawyers hired an "aviation expert" a retired Air Force pilot to say it was all the military's fault and try to get the AAIB to change their report but they wouldn't. Hats off to your AAIB for not being pressurised by the hired gun.
The RAF Board of Investigators decided the SK probably distracted the Cessna but that shouldn't have made him go out of control and crash. Then an Air Chief Marshall decided it was all the fault of the SK crew and the Cessna pilot wasn't to blame at all. Sir John Dale, same guy as blamed the Chinook pilots in the Scotch crash.