Airworthiness directives › 2022-18-04
AD 2022-18-04 Airworthiness Directives; General Electric Company Turbofan Engines
Applicability*9
General Electric Company (GE) GEnx-1B64, GEnx-1B64/P1, GEnx-1B64/P2, GEnx-1B67, GEnx-1B67/P1, GEnx-1B67/P2, GEnx-1B70, GEnx-1B70/75/P1, GEnx-1B70/75/P2, GEnx-1B70/P1, GEnx-1B70/P2, GEnx-1B70C/P1, GEnx-1B70C/P2, GEnx-1B74/75/P1, GEnx-1B74/75/P2, GEnx-1B76/P2, and GEnx-1B76A/P2 model turbofan engines with engine serial numbers 956-102 through 958-775, inclusive, 958-795, and 958-802.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
At the next engine shop visit after the effective date of this AD, remove and replace the fuel hydraulic lines using the Accomplishment Instructions, paragraphs 3.A and 3.B, of GE GEnx-1B Service Bulletin (SB) 73-0099 R00, dated February 28, 2022.
Unsafe condition
This AD was prompted by several reports of fuel leaks caused by high cycle fatigue cracks found at the braze joints on certain GEnx-1B fuel manifolds. The FAA is issuing this AD to prevent fuel leaks on the variable bypass valve and variable stator vane fuel hose manifolds. The unsafe condition, if not addressed, could result in engine fire and damage to the airplane.
Affected ADs
None.
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