Incident at FORT SMITH NT (CYSM)


2003-06-23: UPDATE TSB reported that the Northwestern Air Lease BAe Jetstream 31, registration C-FCPE, had departed Fort Smith, NT for Edmonton, AB. When climb power was selected at 400 feet above ground level (agl) the power on the right engine reduced to about 30 per cent torque. The engine (GARRETT TPE331-10UGR-516H) was secured in accordance with checklist procedures, and the aircraft returned to Fort Smith without further incident. No faults were found during a detailed maintenance examination, a ground run and a flight test, and the aircraft was returned to service. Four flights later it was observed that the Torque Temp Limiting (TTL) system test was producing abnormally large drops in torque, temps, and fuel flow. This system prevents engine damage on takeoff by bypassing a small amount of fuel if an over torque or over temperature condition is encountered. Testing determined that the TTL valve would intermittently bypass excessive amounts of fuel. The TTL valve was replaced with a serviceable unit and the aircraft was returned to service.
2003-06-18: PLR 589, a BAe 31, departed Fort Smith for Edmonton at 1632Z and at 1636Z, the crew reported an engine failure and were returning to land. The aircraft landed on Runway 11 without further problems. TSB will contact the company.


CADORS Number 2003C0771
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 2003-06-17 - 16:32
Day or Night? Day-time
Fatalities 0
Aerodrome ID CYSM
Aerodrome Name FORT SMITH NT (CYSM)
Geographic Location Northwest Territories, Canada, North America, Prairie and Northern Region, Fort Smith
TSB Occurrence Number A03W0122
TSB Class of Investigation Class 5
AOR Number 29981
Reported By NAV CANADA
Categories System/component failure or malfunction [powerplant],Other

Aircraft Details (1 aircraft)

Type Aeroplane
 Silhouette image of Aeroplane
Canadian Registration FCPE | Flightaware (Registration) | Flightaware (Tracking) | AvHerald
Foreign Registration
Country of Registration Canada
Occurrence Type Incident
Operator NORTHWESTERN AIR LEASE LTD. (271) Commercial
Make  Silhouette image of BRITISH AEROSPACE
Model 3112
Year Built 1988
Engine Type Turbo prop
Engine Make  Silhouette image of GARRETT
Engine Model TPE331-10UGR-516H
Gear Type Land
Private No
Amateur Built No
Flight Number PLR 598
Flight Rule
CARS Subpart
Phase of Flight Climb
Damage No Damage
Fatalities 0
Injuries 0
Events Diversion,Engine failure

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