Gatineau, Quebec, 16 March 2012 - The Transportation Safety Board of Canada (TSB) today released its investigation report into the 18 November 2010 loss of control and collision with terrain of a Beechcraft Bonanza F33A, operated by the Seneca College of Applied Arts and Technology near the Toronto/Buttonville municipal airport.
The aircraft departed the Buttonville airport on a night visual flight rules flight to Kingston airport (Ontario) with an instructor and two students on board. Weather en route began to deteriorate and the flight headed back to the point of departure. On radar, it was observed to be westbound in level flight before it turned north and began to climb. It then turned abruptly to the left and descended. The aircraft was subsequently located in a ploughed field approximately 10 miles east of the airport. It had been destroyed on impact. The three occupants did not survive.
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Synopsis
At approximately 18:19 Eastern Standard Time, the Seneca College Beechcraft F33A aircraft (registration C–GSCZ) departed Toronto/Buttonville Municipal Airport for Kingston Airport, Ontario, on a night visual flight rules flight with an instructor and two commercially–qualified students on board. Weather en route began to deteriorate and the aircraft was headed back to Toronto/Buttonville Municipal Airport. The aircraft was observed on radar to be westbound in level flight before it turned north and began to climb. The aircraft then turned abruptly to the left and descended; radar contact was lost. The aircraft was subsequently located in a ploughed level field approximately 10 nautical miles east of the Toronto/Buttonville Municipal Airport. It was destroyed on ground impact and the three occupants were fatally injured. There was no fire and the emergency locator transmitter did not activate. The accident occurred at approximately 18:44 Eastern Standard Time during the hours of darkness.Findings as to Causes and Contributing Factors
- After encountering adverse weather conditions, a climbing right turn was initiated. During the climbing turn, engine power was likely not increased and the airspeed decayed. The angle of attack on the left wing was allowed to increase until it stalled and dropped unexpectedly.
- The location of the flight instruments made it more difficult for the instructor in the right seat to see and react to them and control of the aircraft was not regained before the aircraft struck the ground in a non–survivable impact.







