ampanyour last post have raised some prudent points.
I'm not interested in the altitude issue and the various alleged rules
– some of the previous operating crews appear to have accepted that culture.
The nav section obliged, thinking they were only moving the waypoint from the NDB to the TACAN.
– but they never bothered to check the new track was straight at Mt Erebus.
somehow found its way into the briefing papers given to Captain McWilliams a couple of years before.
– how does that happen in a professional airline?
The Air NZ route was not. It's a complete red herring of no relevance
. – I would respectfully suggest that there was a lot of relevance especially to the 257 victims of this terrible tradgedy.
So it remains, undisputed,Mahon’s profound statement .........................” the incompetent administrative airline procedures which made the mistake possible”