At about 0600 hours the pilot and his passengers proceeded by motor vehicle from Kondut to the aerodrome at Wongan Hills. At 0632 hours the pilot contacted the Perth Briefing Office by telephone and. after obtaining the appropriate area meteorological forecast, he submitted flight plan details in respect of a flight to Bibby Spring and return. He indicated that his expected time of departure from Wongan Hills was 0645 hours, the flight time would be 45 minutes in each direction, the fuel endurance was 180 minutes and the flight was to be conducted in accordance with the Visual Flight Rules.

The pilot telephoned Archerfield Briefing Office at 0620 hours and notified flight plan details for a direct flight from Redcliffe to Cloncurry operating in accordance with the Visual Flight Rules. 

His flight plan indicated an expected departure time of 0730 hours, cruising altitude 8,500 feet, a flight time of 289 minutes and a fuel endurance of 396 minutes. The meteorological forecasts which he obtained indicated that fine conditions would prevail over the proposed route. 

Prior to departure the pilot refuelled the aircraft, probably to capacity. He then supervised the loading of the aircraft and, at departure, the gross weight of the aircraft was about the maximum permissible.

Aircraft struck water, descending and turning to the right. It then dived steeply into the sea about one kilometre off the shoreline of Port Grey.

The pilot was visiting Karratha on business in his twin engined aircraft and he agreed to a request to take a friend and another local resident for a flight in the Karratha area. The three men met at Karratha aerodrome and at about 0945 hours, before proceeding to the aircraft, the pilot advised the Flight Service Officer on duty at Karratha that he would be making a local flight. Written details are not required for such flights and none were submitted. The pilot also advised that he did not require a radio watch to be kept on the «;ht for search and rescue purposes. At 0958 hours the pilot reported to the Karratha Flight Service Unit by radio that the aircraft was taxying for a local flight and that Runway 08 would be used for take-off. There was no further communication with the aircraft.

At 1125 hours Central Standard Time on 3 March, 1975 a Beech D55 'Baron' aircraft, registered VH-TYM struck the ground during an attempted 'go-around' from a landing approach at Parafield Airport, South Australia. The aircraft was virtually destroyed by impact forces and subsequent fire and the five occupants were killed.

At 1703 hours CST on 13 March, 1975 a Cessna 31QN aircraft, registered VH-SDE, struck a 60 feet high radio mast and dived to the ground at Fltzroy Station, Northern Territory. The aircraft was destroyed by Impact forces and subsequent fire and the five occupants were killed.

The aircraft turned slightly to the right and crashed to the ground in a starboard wing down attitude. The main wreckage came to rest in an upright position 130 metres beyond the point of power line contact and a fierce fire broke out immediately.

The investigation revealed that the undercarriage had been in the fully retracted position when the aircraft made contact with the strip.

At about 1730 hours EST on 5 October, 1975, a hang glider which was being operated as a towed kite sustained a structural failure in flight and crashed on a farm property near Brim, Victoria. The kite was under tow by a motor car at the time of the occurrence. The pilot was killed and the kite virtually destroyed in the accident. There was no injury to any other person and no damage to property.

At approximately 0218 hours Eastern Standard Time on 10 May 1975, Bristol 170 Mark 21/A1 aircraft registered VH-SJQ, entered the sea near Cape Paterson, Victoria. The cause of the accident has not been determined.