tuc, I would imagine that the very least needed would be the processes that were involved in the formation of both the CAA and the AAIB. No doubt they were formed on the authority of a Civil Aviation Act and a similar Military Aviation Act would be required to authorise and empower both an MAA and an MAAIB. Thereafter the MOD would effectively become an "Air Operator" and have a similar relationship with both bodies as its civilian counterparts do with theirs. On that basis lying or falsifying records etc would be very serious offences, though what sanctions could then be imposed and upon whom would have to be both clearly laid out and rigorously enforced should the situation arise. As I said earlier this isn't going to be easy, but it has to happen if UK military aviation is not to be cursed with a never ending series of avoidable accidents.