prospector says
"
.One point that has not been put forward is the fact that the airline could very well have only used two crews for all these flights."
Hindsight is a beautiful thing.
"
the findings by the Aircraft Accident Inspector, Ron Chippendale is still the official finding, and has never been appealed"
You bet it was appealed. What do you think ignited the Mahon Inquiry and the incredible investigative work done by Captain Gordon Vette and NZAlpa? If not for that, yes, Chippendale's report may have remained the official finding and what a travesty of justice that would have been.