Airworthiness directives › 2007-10-05
AD 2007-10-05 Airworthiness Directives; General Electric Company (GE) GE90 Series Turbofan Engines
Applicability*9
This AD applies to General Electric Company (GE) GE90-110B1, -113B, and -115B series engines with a Turbine Center Frame (TCF) that has a part number listed in the following Table 1 of this AD installed. These engines are installed on, but not limited to, Boeing 777-200LR and 777-300ER series airplanes. Table 1.—Turbine Center Frame Life Limit by P/N Part No. Life limitation in flight cycles 2061M60G09 14,300 2061M60G22 14,300 2061M60G23 14,300 2061M60G24 14,300 2061M60G26 14,300 2061M60G27 14,300
Compliance
You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done. Modify the Airworthiness Limitations Section of the Engine Manual (f) Within 30 days after the effective date of this AD, revise the Airworthiness Limitations Section of the applicable Engine Manual to include the TCF P/Ns and flight cycle limitation specified in Table 1 of this AD. (g) After the effective date of this AD, except as provided in paragraph (h) of this AD, we will not approve any alternative replacement times for a TCF with a P/N listed in Table 1 of this AD. Alternative Methods of
Unsafe condition
This AD results from a report that GE inadvertently omitted some TCF P/Ns from the Airworthiness Limitations Section (ALS) of the engine manual. We are issuing this AD to prevent structural failure of the TCF with uncontained failure of low pressure turbine (LPT) rotating parts. Uncontained failure of the LPT rotating parts could result in damage to the airplane and possible loss of control of the airplane.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1