There would have been no need to debate LSALT, what constitutes VMC conditions, white out, CVR recordings, FDR configurations and the plethora of other assumptions, innuendos, insinuations and orchestrated litany of lies had the crew simply been told by the Air New Zealand navigation section of the track change. Collins would have methodically plotted the new route and seen that it followed a track down Lewis Bay directly at Mt. Erebus and not the safe, flat, over sea route down McMurdo sound with Erebus well clear, miles from the aircraft flight path.
No accident, no Chippendale report, no Mahon inquiry, no nefarious behaviour by Air New Zealand management and NZ government of the day and more importantly, NO LOSS of LIFE.
Some of the participants on this forum just don't seem to grasp that fact. You can bang on all you like about Swiss cheese, advances in human factors, causal factors and the apportionment of blame. The FACT is, in this accident, the "trigger was pulled" when the route was changed and Jim Collins and his crew were not advised.