Narrative:
A de Havilland Canada DHC-3T Turbo Otter was destroyed in an accident 56 km northeast of Mayo, YT, Canada. The pilot, who was the sole occupant, sustained fatal injuries.
The wheel-ski equipped aircraft was being utilized in support of mineral exploration activities, to transport building materials, fuel, and winter camp supplies from Mayo, Yukon, to winter airstrips located at Withers Lake and Rackla River, Yukon. On the accident flight, the aircraft was transporting a load of twelve 6-inch by 6-inch wood timbers, each 16 feet long, and 2 barrels of jet fuel.
The accident flight departed Mayo at 14:48 under visual flight rules (VFR). Some nineteen minutes later the aircraft experienced a catastrophic in-flight breakup. Aircraft wreckage came down on a remote, snow-covered hillside at about 4300 feet above sea level.
Findings as to causes and contributing factors: "The aircraft departed controlled flight for reasons which could not be determined, and broke up due to high speed."
Loss of control
| Status: | Accident investigation report completed and information captured |
| Date: | Thursday 31 March 2011 |
| Time: | 15:07 |
| Type: |  de Havilland Canada DHC-3T Texas Turbine Otter |
| Operator: | Black Sheep Aviation & Cattle Company |
| Registration: | C-GMCW |
| MSN: | 108 |
| First flight: | 1956 |
| Total airframe hrs: | 16415 |
| Engines: | 1 Garrett TPE331-10R-511C |
| Crew: | Fatalities: 1 / Occupants: 1 |
| Passengers: | Fatalities: 0 / Occupants: 0 |
| Total: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Aircraft fate: | Written off (damaged beyond repair) |
| Location: | 70 km (43.8 mls) NE of Mayo, YT ( Canada)
|
| Phase: | En route (ENR) |
| Nature: | Cargo |
| Departure airport: | Mayo Airport, YT (YMA/CYMA), Canada |
| Rackla Airstrip, YT, Canada |
A de Havilland Canada DHC-3T Turbo Otter was destroyed in an accident 56 km northeast of Mayo, YT, Canada. The pilot, who was the sole occupant, sustained fatal injuries.
The wheel-ski equipped aircraft was being utilized in support of mineral exploration activities, to transport building materials, fuel, and winter camp supplies from Mayo, Yukon, to winter airstrips located at Withers Lake and Rackla River, Yukon. On the accident flight, the aircraft was transporting a load of twelve 6-inch by 6-inch wood timbers, each 16 feet long, and 2 barrels of jet fuel.
The accident flight departed Mayo at 14:48 under visual flight rules (VFR). Some nineteen minutes later the aircraft experienced a catastrophic in-flight breakup. Aircraft wreckage came down on a remote, snow-covered hillside at about 4300 feet above sea level.
Probable Cause:
Findings as to causes and contributing factors: "The aircraft departed controlled flight for reasons which could not be determined, and broke up due to high speed."
Accident investigation:
 |
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Classification:
Airframe failureLoss of control
Sources:
» CADORS 2011C1056Follow-up / safety actions
TSB issued 1 Safety Recommendation
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Photos
Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Mayo Airport, YT to Rackla Airstrip, YT as the crow flies is 145 km (91 miles).
Accident location: Approximate; accuracy within a few kilometers.
Distance from Mayo Airport, YT to Rackla Airstrip, YT as the crow flies is 145 km (91 miles).
Accident location: Approximate; accuracy within a few kilometers.
This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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