Summary
The Federal Aviation Administration (FAA) proposes to adopt a new airworthiness directive (AD) that is applicable to General Electric (GE) CF34-8C1 turbofan engines. This proposal would require replacing combustion chamber assemblies, part number (P/N) 4126T87G04, before accumulating a new reduced cyclic life limit. This proposal is prompted by stress and life analysis conducted by GE. The actions specified by the proposed AD are intended to prevent rupture of the combustion chamber assembly and possible engine fire.