B773, vicinity Toronto Canada, 2012

B773, vicinity Toronto Canada, 2012

Summary

On 28 May 2012 a GE90-powered Air Canada Boeing 777-300ER experienced sudden failure of the right engine during the initial climb after take off. There were no indications of associated engine fire and the failed engine was secured, fuel jettisoned and a return to land made. The Investigation found that the failure was related to a known manufacturing defect which was being controlled by repetitive boroscope inspections, the most recent of which was suspected not to have identified deterioration in the affected part of the engine.

Description

On 28 May 2012, a Boeing 777-300ER powered by GE90 engines and being operated by Air Canada on a scheduled passenger flight from Toronto to Tokyo Narita experienced sudden failure of the right engine on the initial climb after take off in day Visual Meteorological Conditions (VMC). There were no indications of any associated engine fire and so the failed engine was secured, an emergency declared to ATC and an uneventful return to land made after fuel jettison to reduce landing weight to the maximum permitted. Debris ejected from the exhaust of the failed engine fell onto and damaged several vehicles on the ground but no injuries from this falling debris were reported.

Investigation

An Investigation was carried out by the Canadian TSB. DFDR, Cockpit Voice Recorder (CVR) and Quick Access Recorder download of data covering the period prior to, during and after the failure was successfully downloaded.

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