 A. Drummond, to be a "pilot of more than ordinary ability," and led to a reorganisation of the Department's system of air traffic control.The inquiry found that the probable cause of the crash was interference with the aeroplane's magnetic compass due to a nearby electrical storm and a temporary defect in the navigational signals sent by the Government-maintained Kempsey low-frequency radio range station, an important navigational aid to flights in the area.The inquiry also identified errors and deficiencies in the aeronautical charts used to navigate the mountainous area.