Incident at EDMONTON INTL AB (CYEG)

Summary

2005-05-03: WJA 107, a B737-200, departed Edmonton for Vancouver and the crew later advised of a loss of pressurization while climbing through FL 210. They requested descent and to return to YEG. The aircraft landed at 0111Z. TSB will contact the company.
2005-05-05: UPDATE MAINTENANCE AND MANUFACTURING REPORTED THAT ON DEPARTURE FROM YEG, C-GWJG (tail # 736) WAS CLIMBING THROUGH FL 210 WHEN THE CREW NOTICED THE CABIN DIFFERENTIAL WAS AT MAXIMUM AND THE CABIN RATE OF CLIMB WAS EXCEEDING 3,000 FPM (UP). THEY IMMEDIATELY INITIATED A RAPID DESCENT AND STABILIZED THE CABIN ALTITUDE AT AN A/C ALTITUDE OF 17,000 FT. THE A/C RETURNED TO YEG AND PERFORMED A NORMAL LANDING. YEG MAINTENANCE CARRIED OUT THE REPLACEMENT OF THE PRESSURE CONTROLLER.
2005-05-11: UPDATE TSB reported that the WestJet Boeing 737-200 (C-GWJG), operating as WJA 107, was climbing through FL 210 when the crew noticed that the cabin rate of climb exceeded 3000 fpm up. An emergency descent was initiated and the emergency descent checklist completed. The cabin pressure stabilized at 17,000 feet during the descent and WJA 107 returned to the Edmonton International airport. The pressurization controller was replaced and the aircraft was returned to service.

Details


CADORS Number 2005C0856
Occurrence Type Incident
Reported By NAV CANADA
Occurred At 2005-05-03 - 00:59
Day or Night? Day-time
Fatalities 0
Injuries
Aerodrome ID CYEG
Aerodrome Name EDMONTON INTL AB (CYEG)
Geographic Location Alberta, Canada, North America, Prairie and Northern Region, Edmonton
TSB Occurrence Number A05W0083
TSB Class of Investigation Class 5
AOR Number 55612-V1
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 GWJG | 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 737 275
Year Built 1972
Engine Type Turbo fan
Engine Make PRATT & WHITNEY-USA
Engine Model JT8D-9A
Gear Type Land
Private No
Amateur Built No
Flight Number WJA 107
Flight Rule
CARS Subpart
Phase of Flight Climb
Damage No Damage
Fatalities 0
Injuries 0
Events Diversion,Decompression/pressurization

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