It is merely the summation of the avoidable deaths in airworthiness related fatal accidents covered in various threads on this forum. As you say, the RAF BoI came to no specific accident cause, much to the annoyance of the reviewing officers who of course did know the cause. The fact that the aircraft was grossly dangerous and unairworthy was not revealed either. It has taken a bunch of unknowns to do that. Evidence was submitted to Lord Philip who confirmed that the interim CAR issued by Controller Aircraft was mandated upon the RAF. The CAR said that the aircraft 'was not to be relied on in anyway whatsoever'. ACAS then signed it up as airworthy and it was released to squadron service. The HC2 had a 'training and familiarisation clearance only' for ground training purposes on the day that the RAF put 25 high ranking security officials on board. They died along with the 4 crew members.
This accident should be reviewed and investigated by a competent and independent Inquiry. All the evidence (especially pertaining to actions by the airworthiness authority, aka the MOD, in the years prior to the accident) that has not been destroyed (despite the thread OP) should be made available to it and acted upon, unlike all previous efforts.
Last edited by Chugalug2; 12th Dec 2019 at 19:24.