6 fatalities

1977-05-28: Mitsubishi MU-2 Marquise (C-GODI) — Athabaska Airways — Portage la Prairie, Canada

Portage la Prairie, CanadaFlight

On May 28, 1977, a Mitsubishi MU-2 Marquise (registration C-GODI) operated by Athabaska Airways was involved in an aviation accident near Portage la Prairie, Canada in flight. 6 people were killed. Investigators recorded the probable cause as: The captain did not adequately assess the forecast weather phenomena and did not take appropriate action to avoid it. The captain flew the aircraft into thunderstorm conditions which resulted in a loss of control. 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 1781227936Data APIEditorial standards

A charter flight from Winnipeg to La Ronge crashed after encountering severe weather, killing all six occupants. The aircraft struck a marshy area 27 km north of Portage la Prairie.

Flight Details

The aircraft was dispatched from Prince Albert, Saskatchewan, to Winnipeg, Manitoba, on a charter flight to pick up four fishermen and transport them to La Ronge, Saskatchewan. The crew consisted of pilot John Kinzel and copilot Mark Hefferman.

Sequence of Events

During initial climb-out from Winnipeg, the aircraft was cleared to 22,000 feet. Thirteen minutes after takeoff, the crew obtained clearance to alter heading to avoid weather they were painting on their radar. Over the next six minutes, the crew reported severe turbulence and requested vectors out of the area. Moments later, the aircraft emerged vertically at low altitude from the base of a dark cloud. It struck an island of reeds in a marshy area at high speed in a 60-degree nose-down attitude. The wreckage was found 27 km north of Portage la Prairie. All six occupants were killed.

Investigation Findings

The official investigation identified the following findings: The captain did not adequately assess the forecast weather phenomena and did not take appropriate action to avoid it. The captain flew the aircraft into thunderstorm conditions which resulted in a loss of control. Additionally, the flight crew was not appropriately qualified on the aircraft type.

Probable cause

The captain did not adequately assess the forecast weather phenomena and did not take appropriate action to avoid it. The captain flew the aircraft into thunderstorm conditions which resulted in a loss of control. The flight crew was not appropriately qualified on the aircraft type.