Incident at FORT MCMURRAY AB (CYMM)
2005-06-06: UPDATE Maintenance and Manufacturing reported that during the regular scheduled afternoon departure out of Fort McMurray for Calgary, the crew experienced a concern with the retraction of the landing gear. The left main wheel and the nose gear retracted normally, but the right main gear would not retract. At this time, the flight crew observed that the hydraulic fluid level and operating pressure indicated low. The decision was made to perform an emergency gear extension and after orbiting to reduce the fuel load, return for a landing at Fort McMurray. A successful landing was carried out. Upon inspection of the aircraft, it was found that a 'Swivel Fitting' in the main hydraulic retraction/extension system of the right main landing gear had developed a leak. Further inspection of the Swivel Fitting (p/n L38710SA - Item 390 in Figure 50 of Chapter 32-30-00 in the SAAB 340A Illustrated Parts Catalog) had broken and failed internally, causing a loss of hydraulic system pressure and fluid content. A new Swivel Fitting was acquired and subsequently installed on the ramp at Fort McMurray. After servicing the hydraulic system, bleeding the brakes, ensuring that the nose wheel steering functioned appropriately and preparing the aircraft to apply MEL 32-33-1 'Landing Gear Extension/ Retraction Control System - Inoperative' and MEL 32-34-1 'Explosive Bolt(s) - Activated - Not Replaced', the aircraft was flown to Calgary for restoration/ replacement of the explosive bolts, gear swings and function checks prior to going back into scheduled service on the morning of June 4th. The failed Swivel Fitting has been retained for anticipated assessment. An SDR has been submitted as well as the incident description has been relayed to the SAAB Aircraft Technical Support Department.
2005-06-01: CPB 503, a Saab 340, departed Fort McMurray for Calgary and a short time later, the crew reported a hydraulic problem. They observed a loss of hydraulic pressure and elected to circle the airport and consult with maintenance. The crew then extended the landing gear using the auxiliary system and landed safely at 0152Z. The nosewheel steering was affected, but the crew managed to get the a/c off the runway and parked on a taxiway. The cause of the loss of hydraulic fluid is not known.
|Occurred At||- 01:46|
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Aircraft Details (1 aircraft)
|Canadian Registration||| Flightaware (Registration) | Flightaware (Tracking) | AvHerald|
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