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Accident
Last updated: 19 April 2018
Status:Schlussbericht
Datum:Dienstag 11 Januar 1983
Flugzeugtyp:Silhouette image of generic SBR1 model; specific model in this crash may look slightly different
Rockwell Sabreliner 65
Fluggesellschaft:Sun Oil Co
Kennzeichen: N99S
Werknummer: 465-64
Baujahr: 1981
Betriebsstunden:668
Anzahl Zyklen der Zelle:407
Triebwerk: 2 Garrett TFE731-3R-1D
Besatzung:Todesopfer: 2 / Insassen: 2
Fluggäste:Todesopfer: 3 / Insassen: 3
Gesamt:Todesopfer: 5 / Insassen: 5
Sachschaden: Zerstört
Konsequenzen: Written off (damaged beyond repair)
Unfallort:13 km (8.1 Meilen) NE of Toronto International Airport, ON (YYZ) (   Kanada)
Flugphase: Annäherung (APR)
Betriebsart:Geschäftsflug
Flug von:Philadelphia International Airport, PA (PHL/KPHL), USA
Flug nach:Toronto International Airport, ON (YYZ/CYYZ), Kanada
Unfallbericht:
The aircraft was on a corporate flight from Philadelphia International Airport, USA, to Toronto International Airport when it crashed, 7.6. nm from the threshold of runway 24R while being vectored for an ILS approach.
The aircraft was observed to descend steeply from cloud and execute a series of abrupt, rolling movements, before striking the ground in a nose low, inverted attitude. A severe fire followed. The two crew members and three passengers die in the crash.

The investigators noted that there are indications of a pre-impact internal failure in the low pressure compressor of the right engine. The cause of this could not be determined.
There are also indications that the left engine was flamed out and windmilling at impact. The cause of this could not be determined.
It was also noted that wing anti-ice was not operating at impact, while icing conditions were present along the flight path of N99S as it descended and approached the localizer.

Probable Cause:

Cause-Related Findings
1. The cause or causes of this accident could not be determined.

Informationsquelle:
» CASB Report No. 83-030901


Sicherheitsempfehlungen

CASB issued 4 Safety Recommendations

Show all AD's and Safety Recommendations

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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 Philadelphia International Airport, PA to Toronto International Airport, ON as the crow flies is 554 km (346 miles).
Accident location: Exact; deduced from official accident report.

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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