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Boeing 777's With Rolls-Royce Engines Have Big Problems
Posted on Mar 12, 2009
Two Boeing 777's with Rolls-Royce Engines have lost power during flights within a year.
The first of the two incidences happened in January 2008. It involved a British
Airways 777-200ER which was on approach Heathrow Airport in London, England when both engines failed to respond to auto pilot commands to increase thrust. That commercial airliner crashed short of the runway with 152 passengers plus crew members. There were several injuries but no deaths in that crash.
The second commercial aviation accident occurred in November of 2008, when a Delta Air Lines 777-200 lost thrust in one of it's Rolls-Royce engines over Montana. The crew followed the Boeing's and FAA's published procedure and the engine was successfully restarted. The airplane landed safely in Atlanta, GA.
In both incidences, investigators determined that the cause was the buildup of ice from water normally present in all jet fuel.
Boeing engineers, working in the laboratory, determined that the heat generated by the Rolls-Royce fuel-oil heat exchanger is not adequate to prevent moisture in the fuel from freezing. When that happens, ice can form that blocks fuel to the exchanger, starving the engines.
Boeing engineers, determined that the heat generated by the Rolls-Royce fuel-oil heat exchanger is not adequate to prevent moisture in the fuel from freezing. When that happens, ice can form that blocks fuel to the exchanger, starving the engines.
More than 700 Boeing 777s are in service with airlines around the world.
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