Incident at ROCKY MOUNTAIN HOUSE AB (CYRM)

Summary

2003-04-25: UPDATE TSB reported that the Westjet Boeing 737-200, C-FIWJ, operating as WJA 18 departed Edmonton International (CYEG) for Vancouver (CYVR), and after flaps were retracted, the leading edge flap transit light flickered. During the climb through 10,000 feet, the light came on steady with a corresponding leading edge device annunciator light indicating extension. The trailing edge flaps indication was 0 degrees and no roll was encountered. When completion of the leading edge devices non-normal checklist did not resolve the discrepancy, an emergency was declared and the aircraft landed at CYEG without further incident. AFF had responded and followed the aircraft to the gate. Maintenance determined that the number 1 flap leading edge down lock proximity sensor had failed, and gave a false indication.
2003-04-28: UPDATE Maintenance and Manufacturing also reported that the #1 L.E. Krueger Flap proximity switch was determined to be at fault for the indication problem. The item was MEL'd and the aircraft departed Edmonton. The proximity switch was adjusted in Calgary the same day and the aircraft returned to service with no further problems reported.
2003-04-23: WJA 18, a B737-200, departed Edmonton at 2148Z and at 2200Z, the crew advised of a flap problem and requested to return to YEG. CFR was called to standby as WJA 18 landed without incident at 2228Z. TSB will be contacting the company.

Details


CADORS Number 2003C0497
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 2003-04-22 - 22:00
Day or Night? Day-time
Fatalities 0
Injuries
Aerodrome ID CYRM
Aerodrome Name ROCKY MOUNTAIN HOUSE AB (CYRM)
Geographic Location Alberta, Canada, North America, Prairie and Northern Region, Vicinity of Rocky Mountain House
TSB Occurrence Number A03W0080
TSB Class of Investigation Class 5
AOR Number 28807
Reported By NAV CANADA
Categories System/component failure or malfunction [non-powerplant],Other
Events



Aircraft Details (1 aircraft)

Type Aeroplane
 Silhouette image of Aeroplane
Canadian Registration FIWJ | Flightaware (Registration) | Flightaware (Tracking) | AvHerald
Foreign Registration
Country of Registration Canada
Occurrence Type Incident
Owner WESTJET
Operator WESTJET (8893) Commercial
Make  Silhouette image of BOEING
BOEING
Model 737 2M8
Year Built 1971
Engine Type Turbo fan
Engine Make PRATT & WHITNEY
Engine Model JT8D-15
Gear Type Land
Private No
Amateur Built No
Flight Number WJA 18
Flight Rule
CARS Subpart
Phase of Flight Climb
Damage No Damage
Fatalities 0
Injuries 0
Events Declared emergency/priority,Diversion,Flight control systems (ailerons, rudder, rotors, flaps, main, tail)

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