Airworthiness directives › 2012-19-08
AD 2012-19-08 Airworthiness Directives; General Electric Company Turbofan Engines
Applicability*9
This AD applies to: (1) General Electric Company (GE) GEnx-1B54, GEnx-1B58, GEnx-1B64, GEnx-1B67, GEnx-1B70, GEnx-1B54/P1, GEnx-1B58/P1, GEnx-1B64/P1, GEnx-1B67/P1, GEnx-1B70/P1, GEnx-1B70/72/P1, GEnx-1B70/75/P1, GEnx-1B74/75/P1, and GEnx-1B75/P1 turbofan engines with fan mid shaft (FMS) part number (P/N) 2331M20G02 or P/N 2332M81G01, installed; and (2) GE GEnx-2B67 and GEnx-2B67B turbofan engines with FMS P/N 2332M33G01, installed.
Compliance
(1) Perform an initial UI for cracks in the FMS before further flight. (2) Thereafter, perform repetitive UIs for cracks in the FMS within every 90 days since-last-inspection. (3) Remove any cracked FMS from service before further flight. (4) For engines listed in paragraph (c)(1) of this AD, use paragraphs 3.A and 3.B.(1) through 3.B.(9) of the Accomplishment Instructions of GE Service Bulletin (SB) No. GEnx-1B S/B 72-0107, Revision 2, dated September 14, 2012, to do the inspections. (5) For engines listed in paragraph (c)(2) of this AD, use paragraphs 3.A and 3.B.(1) through 3.B.(9) of the Accomplishment Instructions of GEnx-2B S/B 72-0091, Revision 1, dated September 14, 2012, to do the inspections.
Required actions
The Manager, Engine Certification Office, FAA, may approve AMOCs to this AD. Use the procedures found in 14 CFR 39.19 to make your request.
Unsafe condition
Comply with this AD within the compliance times specified, unless already done.
Affected ADs
None.
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