Vliegtuigongeval op 27 NOV 2008 met British Aerospace 3112 Jetstream 31 C-FNAY - Fort Smith Airport, NT (YSM)
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Status:Accident investigation report completed and information captured
Datum:donderdag 27 november 2008
Tijd:15:15
Type:Silhouette image of generic JS31 model; specific model in this crash may look slightly different
British Aerospace 3112 Jetstream 31
Luchtvaartmaatschappij:Northwestern Air
Registratie: C-FNAY
Constructienummer: 768
Bouwjaar: 1987
Motoren: 2 Garrett TPE331-10UG-514H
Bemanning:slachtoffers: 0 / inzittenden: 2
Passagiers:slachtoffers: 0 / inzittenden: 3
Totaal:slachtoffers: 0 / inzittenden: 5
Schade: Groot
Gevolgen: Written off (damaged beyond repair)
Plaats:Fort Smith Airport, NT (YSM) (   Canada)
Fase: Landing (LDG)
Soort vlucht:Binnenlandse lijnvlucht
Vliegveld van vertrek:Hay River Airport, NT (YHY/CYHY), Canada
Vliegveld van aankomst:Fort Smith Airport, NT (YSM/CYSM), Canada
Vluchtnummer: 734
Beschrijving:
The Northwestern Air BAe Jetstream 3112 (registration C-FNAY) was operating as flight PLR734 on an instrument flight rules (IFR) flight from Hay River Airport, NT (YHY) to Fort Smith Airport, NT (YSM). After conducting an IFR approach to runway 11, PLR 734 executed a missed approach and flew a full procedure approach for runway 29. At approximately 0.2 nautical miles from the threshold, the crew sighted the approach strobe lights and continued for a landing. Prior to touchdown, the aircraft entered an aerodynamic stall and landed hard on the runway. The aircraft remained on the runway despite the left main landing gear collapsing. The two flight crew members and three passengers were uninjured and evacuated the aircraft through the left main cabin door. There was no post-impact fire.

Probable Cause:

FINDINGS AS TO CAUSES AND CONTRIBUTING FACTORS:
1. Though icing conditions were encountered, the airframe de-icing boots were not cycled nor was the Vref speed increased to offset the effects of aircraft icing.
2. An abrupt change in aircraft configuration, which included a reduction in power to flight idle and the addition of 35º flap, caused the aircraft's speed to rapidly decrease.
3. The aircraft entered an aerodynamic stall due to the decreased performance caused by the icing. There was insufficient altitude to recover the aircraft prior to impact with the runway.

Accident investigation:
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Investigating agency: TSB Canada
Status: Investigation completed
Duration: 153 days (5 months)
Accident number: A08W0237
Download report: Final report

Bronnen:
» CADORS Number: 2008C4178


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Kaart
Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Hay River Airport, NT en Fort Smith Airport, NT bedraagt 227 km (142 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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