A failure of oil pipes in the hot strut is suspected of triggering the chain of events that led to the uncontained failure of a Rolls-Royce Trent 900 engine on a Qantas Airbus A380 on Nov. 4. Investigators have identified flawed welding of the pipes as the source of an oil leak that caused an oil fire and the failure of the turbine disk in the intermediate-pressure turbine, industry officials close to the investigation told Aviation Week. Rolls-Royce declined to confirm the information, ...


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