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Airworthiness directives › 2021-02-07

AD 2021-02-07 Airworthiness Directives; General Electric Company Turbofan Engines

2021-03-30
2021-02-23
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Engine
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Applicability*9

This AD applies to all General Electric Company (GE) GEnx-1B64, -1B64/P1, -1B64/P2, -1B67, -1B67/P1, -1B67/P2, -1B70, -1B70/75/P1, -1B70/75/P2, -1B70/P1, -1B70/P2, -1B70C/P1, -1B70C/P2, -1B74/75/P1, -1B74/75/P2, -1B76/P2, and -1B76A/P2 model turbofan engines.

Compliance

Comply with this AD within the compliance times specified, unless already done.

Required actions

(1) Within 500 flight cycles (FCs) after the effective date of this AD, perform a visual inspection of the cushioned loop clamp (p-clamp), significant item number (SIN) 34282, to verify the p-clamp is undamaged and installed. (i) Thereafter, perform the visual inspection required by (g)(1) of this AD at intervals not to exceed 500 FCs since the last inspection. (ii) [Reserved] (2) If, during any visual inspection required by paragraphs (g)(1) or (g)(1)(i) of this AD, the p-clamp (SIN 34282) is outside of the limits in paragraph 3.B.(4) of GE GEnx-1B Service Bulletin (SB) 73-0080 R01, dated August 29, 2019, or if the p-clamp (SIN 34282) is missing, perform a spot fluorescent penetrant inspection of the outer fuel manifold, part number (P/N) 2403M46G01, SIN 34302, using Accomplishment Instructions, paragraph 3.B.(4)(b), of GE GEnx-1B SB 73-0080 R01, dated August 29, 2019. (i) If a crack or a sign of fuel leakage is found, before further flight, remove the outer fuel manifold, P/N 2403M46G01, SIN 34302, from service and replace with a part eligible for installation. (ii) [Reserved] (3) Within 500 FCs after the effective date of this AD, and thereafter at intervals not to exceed 500 FCs from the last p-clamp replacement, replace the p-clamp (SIN 34282) with a new p-clamp (SIN 34282). Complete this required action after performing the visual inspections required by paragraphs (g)(1) and (g)(1)(i) of this AD.

Unsafe condition

This AD was prompted by a report of a crack in the outer fuel manifold causing fuel leakage. The FAA is issuing this AD to prevent failure of the outer fuel manifold. The unsafe condition, if not addressed, could result in engine fire and damage to the airplane.

Affected ADs

None.

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