General Electric has issued a warning to airlines
flying the Boeing 777 to fix the airplane's jet engines after two
incidents in which the giant engines shut down in mid-flight.
GE said it had narrowed down the problem to a gearbox used in 118 engines built between September 2012 and March 2013.
The company said that the problems arose on flights operated by Aeroflot and Air China in February and May, respectively, and that in both cases the aircraft were able to continue flying using just one engine.
However, the company said that it believed there were 25 aircraft operating with the suspect parts in both their engines, and said that those planes should be grounded until their gearboxes could be replaced.
General Electric blamed the problem on a "material anomaly" but said the investigation into the shutdown engines was continuing. Some 1,150 of the engines are currently in active service and had been operating for 15 years with high reliability on over 40 million flight hours.
The engine problem surfaced just as Boeing is attempting to recover from a battery overheating issue which caused the grounding of its new 787 Dreamliner. The company resumed deliveries of the planes earlier this week after developing a fix for the problem.
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