Narrative:The pilot took off from runway 09 at Tuktoyaktuk at 17:06:34, and had turned the aircraft to a southerly direction when the right engine lost all power. He decided to return to the airport. While manoeuvring back to the airport, the aircraft struck an ice-covered lake in a steep, 65 degrees nose-down attitude. The engines and front of the aircraft penetrated the approximately two-foot-thick layer of ice. The remainder of the fuselage, wings, and empennage remained on the ice surface.
Probable Cause:
CAUSES: "A magneto impulse coupling, worn beyond the prescribed limits, resulted in the failure of the right engine. Following the engine failure, the pilot mistrimmed the rudder and was unable to maintain control of the aircraft."
Accident investigation:
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Investigating agency: | TSB Canada |
Status: | Investigation completed |
Duration: | 1 year and 11 months | Accident number: | A93W0204 | Download report: | Final report
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Classification:
Loss of control
Follow-up / safety actions
TSB issued 3 Safety Recommendations
Issued: -- | To: DoT Canada | A95-17 |
The Department: of Transport conduct a special one-time audit to confirm that commercial pilots involved in night, multi-engine operations are receiving the required night training. (Satisfactory in Part) |
Issued: -- | To: DoT Canada | A95-18 |
The Department of Transport evaluate the effectiveness of its current practices for dealing with those operators who are not providing mandatory training for pilots. (Satisfactory in Part) |
Issued: -- | To: DoT Canada | A95-20 |
The Department of Transport revise the guidelines for grouping aircraft for PPCs to take into account the susceptibility to transfer errors by aircrew. (Satisfactory in Part) |
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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 Tuktoyaktuk Airport, NT to Inuvik/Mike Zubko Airport, NT as the crow flies is 126 km (79 miles).
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.