That factor was a serious deterioration in the terminal area forecast of TAF for Norfolk Island for the projected arrival of a Pel-Air ambulance charter flight for Careflight carrying a total of six people from Apia to their ultimate destination in Melbourne. However that information, supposed to be passed on by Auckland traffic control, which was responsible for the air space across most of the charter’s flight path, never reached the jet.
Once again for clarity (refer my previous post #257), it was
NOT Auckland air traffic control's responsibility to pass the amended TAF on Norfolk Island to the Pel Air aircraft. The NZ civil aviation rules clearly indicate that it is not.
If Airservices' staff Jason Harfield and Peter Hobson believes it was, then this is an issue that should have been further investigated and commented on by the ATSB.