HAS59, it rather depends on who you mean by "we". If you mean the Royal Air Force, and its High Command in particular, then the bitter truth is that "we" can't
go about getting this mess sorted
because "we" can't be trusted to do so. The High Command still insists that an order to subvert the regulations was legal, and that anyone who disobeyed it committed an offence. That is the stance of the MOD right up to SoS level. I think that any Airworthiness Authority that operates under such strictures and steadfastly refuses to face up to what was done in the past and has been covered up ever since loses all credibility from the very start. Airworthiness Authorities should not only be independent of such pressures but
be seen to be so.
The problem isn't to keep aircraft fit for use as you put it, it is that aircraft are released into service in accordance with the regulations, and remain so. The MAA is now urgently reviewing each fleet to see in what degree that is not the case, and what action it thinks should result. That can only be an interim solution, and the job of returning UK Military Airworthiness to the level attained some 30 years ago before it was so malevolently violated must be done by an Authority with real authority, ie independent of and without the MOD. Ditto all of the above with the MAAIB.
That is the something that must be done.