Vliegtuigongeval op 15 JUL 1979 met Hawker Siddeley HS-748-259 Srs. 2A C-GPAA - Moosonee Airport, ON (YMO)
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Status:Accident investigation report completed and information captured
Datum:zondag 15 juli 1979
Tijd:06:00
Type:Silhouette image of generic A748 model; specific model in this crash may look slightly different
Hawker Siddeley HS-748-259 Srs. 2A
Luchtvaartmaatschappij:Austin Airways
Registratie: C-GPAA
Constructienummer: 1675
Bouwjaar: 1970
Bemanning:slachtoffers: 0 / inzittenden: 2
Passagiers:slachtoffers: 0 / inzittenden: 0
Totaal:slachtoffers: 0 / inzittenden: 2
Schade: Vernield
Gevolgen: Written off (damaged beyond repair)
Plaats:Moosonee Airport, ON (YMO) (   Canada)
Fase: Geparkeerd (STD)
Soort vlucht:Vracht
Vliegveld van vertrek:Moosonee Airport, ON (YMO/CYMO), Canada
Vliegveld van aankomst:?
Beschrijving:
The HS-748 was loaded with two rubber cargo bladders, filled with 1600 Imp gallons of aviation gasoline. The aircraft was parked overnight, until at 05:40 the 2 crewmembers arrived to perform the pre-departure checks. A smell of Avgas fumes was detectable, but not stronger than on similar trips. The engines were started, and when the no. 1 engine reached idle rpm, the crew proceeded with after-start checks. When both alternators and the left generator were turned on, a violent explosion occurred in the cabin. The nose gear collapsed and the rear airstair was blown off. Both pilots managed to escape before a fierce fire consumed the aircraft.

Probable Cause:

PROBABLE CAUSE: The reason for the accumulation and ignition of the vapours could no longer be definitely determined because of the complete destruction of the aircraft. However, the fact that the explosion occurred during the after-start check as electrical equipment was being turned on suggests equipment in the underfloor electrical bay as a probable source of ignition. Although such equipment is designed to be flameproof, the aircraft had an extensive repair history during which this protection may have been lost.

Bronnen:
» CASB Final Report


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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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