Airworthiness directives › 2016-18-10
AD 2016-18-10 Airworthiness Directives; International Aero Engines AG Turbofan Engines
Applicability*9
This AD applies to International Aero Engines AG (IAE) V2522-A5, V2524-A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, and V2533-A5 engines with either of the following installed: (1) High-pressure turbine (HPT) stage 1 hub, part number (P/N) 2A5001, with a serial number (S/N) listed in Table 1, Appendix A, of IAE Non-Modification Service Bulletin (NMSB) V2500-ENG-72-0661, Revision 2, dated May 27, 2016; or (2) HPT stage 2 hub, P/N 2A4802, with an S/N listed in Table 2, Appendix A, of IAE NMSB V2500-ENG-72-0661, Revision 2, dated May 27, 2016.
Compliance
For the purpose of this AD, a “shop visit” is the induction of an engine into the shop for maintenance involving the separation of pairs of major mating engine flanges, except that the separation of engine flanges solely for the purposes of transportation without subsequent engine maintenance does not constitute an engine shop visit.
Required actions
If you performed inspection and or replacement using IAE NMSB V2500-ENG-72-0661, original issue, dated November 10, 2015 or NMSB V2500-ENG-72-0661, Revision 1, dated February 5, 2016, you met the requirements of paragraphs (e)(2) and (e)(3) of this AD.
Unsafe condition
Comply with this AD within the compliance times specified, unless already done. (1) Inspect the HPT stage 1 hub, P/N 2A5001, and HPT stage 2 hub, P/N 2A4802, at the next shop visit or as follows, whichever comes first: (i) For hubs with 0 to 7,000 CSN on the effective date of this AD, before accumulating 13,000 CSN; (ii) For hubs with 7,001 to 11,000 CSN on the effective date of this AD, within 6,000 cycles from the effective date of this AD or before accumulating 15,000 CSN, whichever occurs first; (iii) For hubs with 11,001 to 15,500 CSN on the effective date of this AD, within 4,000 cycles from the effective date of this AD or before accumulating 17,000 CSN, whichever occurs first; (iv) For hubs with 15,501 CSN or more on the effective date of this AD, within 1,500 cycles from the effective date of this AD. (2) Use Accomplishment Instructions, paragraphs 2.A., 2.C., and 2.D., of IAE NMSB V2500-ENG-72-0661, Revision 2, dated May 27, 2016, to inspect the HPT stage 1 hub, P/N 2A5001. (3) Use Accomplishment Instructions, paragraphs 2.E., 2.G., and 2H., of IAE NMSB V2500-ENG-72-0661, Revision 2, dated May 27, 2016 to inspect the HPT stage 2 hub, P/N 2A4802. (4) Remove from service any HPT stage 1 hub, P/N 2A5001, or HPT stage 2 hub, P/N 2A4802, that fails the inspections required by paragraphs (e)(2) and (e)(3) of this AD, and replace with a part that is eligible for installation.
Affected ADs
None.
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