Incident Overview
On approach to Toronto-Lester Bowles Pearson Airport following an uneventful flight from Philadelphia, an airplane experienced rolling motions to the left and right, then lost altitude and crashed in a field. The impact and subsequent fire destroyed the aircraft. All five occupants were killed, among them Ross Henningar, President and CEO of Sun Oil Company (Sunoco).
Wreckage Location
The wreckage was found approximately 13 kilometers from the threshold of runway 24R.
Probable Cause
The official investigation determined the probable cause to be a loss of control on approach following an internal failure in the low pressure compressor of the right engine, while the left engine flamed out and was windmilling at impact. Investigators were unable to determine the cause of these engine occurrences.
Additional Findings
It was also noted that the anti-icing systems were not activated prior to the accident, despite icing conditions having been forecasted.