... apparently someone trusted this guy to fly one of the fastest early post-war jets without having any knowledge of how to operate it properly.
He was qualified to demonstrate the planes maneuverability above 500ft and he was below that mark.
Two completely different answers to the same question, so yes, one of them is complete nonsense.
It's no different than an owner of a vintage race car hiring a guy to drive it in historic races. They're not necessarily qualified to drive the car but they've been hired to do so.
It's not even remotely similar. There is no qualify by type in the automotive world. If you're licensed to drive, you "qualified." In the competition world, you're licensed by level, but still not by specific type.
He had 14,249 hours of flying time up until the crash with only 40 on-type (other sources say 60 split between one and two seater Hunters - it's possible that 40 is the two-seater total). His experience as a Provost instructor and then as an operational Harrier pilot undoubtedly made him a good jet pilot. They did not make him familiar with the Hunter and its vagaries, no pilot would say that they did. Consider that some qualified sources feel the pilot was showing off and that he was flying below the level allowed with his private licence despite having been waved off for exactly the same thing the previous year and you have a recipe for an unsurprising disaster.
So there's still some authority who looks at those hours and says, "Yes, he's qualified," or, "No, he can't fly that aircraft." Who is that? In the US, it's the FAA. I don't know if 40 hours in Hawkers is enough to be "rated' or not. His total time certainly makes him an experienced pilot, but is 40 hours enough to be type-rated for public low-altitude flight? It also matters how long ago those 40 hours were, i.e., is his type-rating expired?
And had he been waved off in the US for being below minimum altitude in an airshow, he'd have been sat down before an FAA board and would have had some serious explaining to do, with serious disciplinary action possible.
So my question back in post 70, still not answered, is who has that overseeing responsibility in Great Britain? What authority is it that said, "Good to go?" Did his 40 or 60 hours actually qualify him for a public demonstration? Was the demonstration scripted or was he making it up as he went along? In the US, there is no "Go up and see what she can do," at an air show. Everything is completely sequenced and every maneuver is approved. There is no, "I think I'll do
this next" while the show is running. Did he have a sequence or was it
ad lib?