So when he made his unannounced descent below MSA through that hole in the cloud, claiming to be VMC, he knew full well that he was not.Why did he do that? Because he was actually relying on the AINS, and he also knew full well the AINS was not to be used for a descent of that nature.
Well, we don't know for certain whether he was VMC or not; but what we do know is that at the very least he was using the INS as some sort of "backup" - and he should not have been.
When he levelled out at 2000 feet, there was no “false horizon”. That was something dreamt up by Vette, unsupported by any of the experts. There was no horizon, so he should have been out straight away.Instead, down to 1500 – ”we’ll probably see further anyway”. He then went on for two full minutes inside a ping-pong ball, before deciding to bale out.
I also agree, but again, this is just summation not fact. But I think it's more likely than Vette's "false horizon" hypothesis - which is so often purported to be fact rather than just one (biased and unqualified) person's theory.