The initial investigation concluded the accident was caused by pilot error, but public outcry led to the establishment of a Royal Commission of Inquiry into the crash. The commission, presided over by Justice Peter Mahon QC, concluded that the accident was caused by a correction made to the coordinates of the flight path the night before the disaster, coupled with a failure to inform the flight crew of the change, with the result that the aircraft, instead of being directed by computer down McMurdo Sound (as the crew had been led to believe), was instead re-routed to a path toward Mount Erebus. Justice Mahon's report accused Air New Zealand of presenting an orchestrated litany of lies and this led to changes in senior management at the airline.