Incident at Vicinity of Koala, NWT


1997-07-08: The HS 748 was enroute from Yellowknife to Gjoa Haven with 29 people on board, at 15,000 feet when the cabin and cockpit began to fill with smoke. The crew declared an emergency and initiated an emergency descent. The crew then proceeded to Koala which was about 12 miles west. The starboard spill and dump valves were opened to try to dissipate the smoke, without success as the spill valve was jammed. The a/c landed at Koala about 7 minutes after the smoke was first detected. Inspection determined that the port supercharger had failed and that a piece of metallic debris had blocked the spill valve. The passengers were examined by a nurse at Koala and there were no injuries.


CADORS Number 1997C0427
Occurrence Type Incident
Reported By Transportation Safety Board of Canada
Occurred At 1997-07-06 - 17:35
Day or Night?
Fatalities 0
Aerodrome ID
Aerodrome Name
Geographic Location Northwest Territories, Canada, North America, Prairie and Northern Region, Vicinity of Koala, NWT
TSB Occurrence Number
TSB Class of Investigation
AOR Number
Reported By Transportation Safety Board of Canada
Categories Other

Aircraft Details (1 aircraft)

Type Aeroplane
 Silhouette image of Aeroplane
Canadian Registration GFNW | Flightaware (Registration) | Flightaware (Tracking) | AvHerald
Foreign Registration
Country of Registration Canada
Occurrence Type Incident
Operator Commercial
Make  Silhouette image of HAWKER SIDDELEY
Model HS 748 2A
Year Built 1978
Engine Type Turbo prop
Engine Make
Engine Model
Gear Type Land
Private No
Amateur Built No
Flight Number
Flight Rule
CARS Subpart
Phase of Flight Cruise
Damage Unknown
Fatalities 0
Injuries 0
Events Fire/smoke (warning),Declared emergency/priority

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