Dozeywannabe,
You have made your position adequately clear, please do not keep making statements like
.
The INS track was re-engaged once they were at the assigned alititude,
It is, like a lot of your statements, completely without foundation.
You do not get an assigned altitude during a VMC descent, and you would never get assigned any altitude below MSA before you were identified by radar. And as has been proven beyond doubt, they were not on radar. Your theory of radar tapes being destroyed is farcical. It was physically impossible for the radar to get a line of sight return when they were behind Erebus and Ross Island.
But I thank you, I can now see why Mahon has so many adherents.
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Do you see what I'm getting at?
I can certainly see what you are getting at. Such a situation could develop, that is one of the reasons why the descent requirements were spelt out in such detail.
The positive fix was positively wrong.