Airworthiness Directive · Amendment 39-15046 · General Electric Company (GE) GE90 Series Turbofan Engines
General Electric Company (GE) GE90 Series Turbofan Engines
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.
| 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 |
The FAA is adopting a new airworthiness directive (AD) for GE GE90-110B1, -113B, and -115B series turbofan engines with certain Turbine Center Frames (TCFs) installed. This AD requires removing certain TCFs, listed by part number (P/N) in this AD, from service before exceeding 14,300 flight cycles. 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.
You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done.
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.
