CFM International is monitoring its Leap engine fleet for signs of an issue believed to be tied to the March 26 Leap 1B contained engine failure on a Southwest Airlines Boeing 737-8 and has recommended inspections for a subset of engines. The issue: carbon buildup, or deposits of evaporated fuel and other material on fuel nozzles, which lead to uneven temperature flow regions within the combustion chamber exit plane and hot spots within the high-pressure turbine (HPT). These hot spots ...


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