I have to agree totally with
Luke SkyToddler post
He posted
So do any of you guys have any info relevant to this KTM accident, was there in fact some issue with how the Turkish pilots flew the RNP approach on that day, or are you just having a willy waving contest over who knows the most intricate knowledge of RNP / RNAV?
It's all very interesting but I'll bet my bottom dollar it's completely irrelevant to this accident. The approach was fine until the point where they actually had to look out the window and determine if they could see the bloody runway or not.
It doesn't matter what kind of high tech you have on board, what approvals you have, or what kind of approach you do, if you elect to continue below minima without sufficient visual reference.
The questions I would like to ask are these
What was the reported viz before they commenced each approach, how much fuel did they have left after their second approach and what was their planned diversion strategy ie to where and did they have enough fuel to get there ?