26 fatalities

Perth to Port Hedland Flight 1750 Crash (VH-RMQ)

Port Hedland, AustraliaFlight

On December 31, 1968, a Vickers Viscount (registration VH-RMQ) operated by MacRobertson Miller Airlines was involved in an aviation accident near Port Hedland, Australia in flight. 26 people were killed. Investigators recorded the probable cause as: The cause of the accident was that the fatigue endurance of the starboard inner main spar lower boom was substantially reduced by the insertion of a flared bush at station 143 when the margin of safety associated with the retirement life specified for such… This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 6 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-06-12Data APIEditorial standards

A Viscount aircraft crashed en route from Perth to Port Hedland, Western Australia, after a sudden steep descent. All 26 occupants were killed. The probable cause was fatigue failure of a main spar boom.

Flight Details and Departure Flight 1750 was a scheduled domestic service operating from Perth to Port Hedland in Western Australia. While taxiing on runway 02 at Perth Airport, the crew received and acknowledged an air traffic clearance from Perth Tower. The pilot-in-command selected a departure via the 030° radial of the Perth VOR toward Ballidu, with a climb to flight level 170. Takeoff was normal, and the crew reported a departure time of 0836 Western Standard Time. At 0839, the pilot noted an indicated airspeed of 155 knots instead of the planned 175 knots due to turbulence first encountered at 1,500 feet. The co-pilot also informed Perth that the aircraft would climb beyond the planned flight level 170 to cruise at flight level 190. The flight then continued normally along the intended route, transmitting position reports to Perth Flight Service Centre, Meekatharra Flight Service Unit, and Port Hedland Flight Service Centre as scheduled.

Probable cause

The cause of the accident was that the fatigue endurance of the starboard inner main spar lower boom was substantially reduced by the insertion of a flared bush at station 143 when the margin of safety associated with the retirement life specified for such booms did not ensure that this boom would achieve its retirement life in the presence of such a defect.