QNH

But, um, I'd never, I think, done it on such a hot and high day.

Um, it was a particularly hot day in Bloemfontein, high, uh, QNH.

So we ended up, uh, in the pushover, uh, the airplane ended up penduluming into the, um, inverted and, uh, commenced in, uh, a very violent inverted spin.

Um, we never had training in the Air Force for in- inverted spins, and I don't use that as a, uh, as an excuse.