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Date:Tuesday 10 April 1956
Type:Silhouette image of generic DHC3 model; specific model in this crash may look slightly different
de Havilland Canada U-1A Otter (DHC-3)
Operator:Royal Canadian Air Force - RCAF
Registration: 3666
MSN: 12
First flight: 1953
Crew:Fatalities: 2 / Occupants: 2
Passengers:Fatalities: 1 / Occupants: 1
Total:Fatalities: 3 / Occupants: 3
Aircraft damage: Damaged beyond repair
Location:10 km (6.3 mls) N of Goose Bay Airport, NL (YYR) (   Canada)
Phase: En route (ENR)
Departure airport:Goose Bay Airport, NL (YYR/CYYR), Canada
Destination airport:Goose Bay Airport, NL (YYR/CYYR), Canada
An air test of Otter 3666 was planned following repairs on the port inner trailing edge flap. The airplane took off from runway 09 at 18:54 and climbed straight ahead. A sudden spontaneous full flap retraction caused the nose of the aircraft to drop. Loads on the wing exceeded the design strength, causing the left hand wing to break off. It struck the tailplane, causing the Otter to crash out of control.

Issue with flap(s)
Wing failure
Loss of control

» Air crash : the clue is in the wreckage / Fred Jones
» Saskatoon Star-Phoenix 11 April 1956, p1


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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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