2017-07-04: Compressor Section

Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends part 39 of the Federal Aviation Regulations (14 CFR part 39) as follows: PART 39--AIRWORTHINESS DIRECTIVES 0 1. The authority citation for part 39 continues to read as follows: [[Page 16730]] Authority: 49 U.S.C. 106(g), 40113, 44701. Sec. 39.13 [Amended] 0 2. The FAA amends Sec. 39.13 by removing Airworthiness Directive (AD) 2013-24-17, Amendment 39-17694 (78 FR 76045, December 16, 2013), and adding the following new AD: 2017-07-04 General Electric Company: Amendment 39-18842; Docket No. FAA-2013-0879; Directorate Identifier 2013-NE-30-AD. (a) Effective Date This AD is effective April 21, 2017. (b) Affected ADs This AD replaces AD 2013-24-17, Amendment 39-17694 (78 FR 76045, December 16, 2013) (``AD 2013-24-17''). (c) Applicability All GE90-110B1 and GE90-115B engines with high-pressure compressor (HPC) stage 2-5 spools, with: (1) a part number (P/N) 351-103-106-0, 351-103-107-0, 351-103- 108-0, 351-103-141-0, 351-103-142-0, 351-103-143-0, 351-103-144-0, 351-103-145-0, 351-103-146-0, 351-103-148-0, 351-103-149-0, 351-103- 150-0, or 351-103-151-0; and (2) a serial number listed in paragraph 4, Appendix A, of GE Service Bulletin (SB) GE90-100 SB 72-0659 R01, dated February 18, 2016. (d) Subject Joint Aircraft System Component (JASC) Code 7230, Turbine Engine Compressor Section. (e) Unsafe Condition This AD was prompted by reports of cracks in HPC rotor stage 2-5 spool aft spacer arms since AD 2013-24-17.We are issuing this AD to prevent failure of the HPC rotor stage 2-5 spools, uncontained spool release, damage to the engine, and damage to the airplane. (f) Compliance (1) Comply with this AD within the compliance times specified, unless already done. (2) Remove from service HPC rotor stage 2-5 spools listed in paragraph 4, Appendix A, of GE SB GE90-100 SB 72-0659 R01, dated February 18, 2016, as follows: (i) For spools that have fewer than 4,500 flight cycles since new (CSN) on the effective date of this AD, remove before exceeding 5,000 CSN. (ii) For spools that have 4,500 CSN or more but fewer than 5,200 CSN on the effective date of this AD, remove within 500 cycles in service (CIS) but not to exceed 5,500 CSN. (iii) For spools that have 5,200 CSN or more but fewer than 5,600 CSN on the effective date of this AD, remove within 300 CIS but not to exceed 5,800 CSN. (iv) For spools that have 5,600 CSN or more but fewer than 5,800 CSN on the effective date of this AD, remove within 200 CIS but not to exceed 5,850 CSN. (v) For spools that have 5,800 CSN or more but fewer than 6,000 CSN on the effective date of this AD, remove within 50 CIS but not to exceed 6,000 CSN. (vi) For spools that have 6,000 CSN or more on the effective date of this AD, remove before the next flight. (g) Alternative Methods of Compliance (AMOCs) The Manager, Engine Certification Office, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request. You may email your request to: [email protected]. (h) Related Information For more information about this AD, contact John Frost, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 01803; phone: 781-238-7756; fax: 781-238-7199; email: [email protected]. (i) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) General Electric Company (GE) Service Bulletin GE90-100 SB 72-0659 R01, dated February 18, 2016. (ii) Reserved.(3) For GE service information identified in this AD, contact General Electric Company, GE-Aviation, Room 285, 1 Neumann Way, Cincinnati, OH 45215, phone: 513-552-3272; fax: 513-552-3329; email: [email protected]. (4) You may view this service information at FAA, FAA, Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA. For information on the availability of this material at the FAA, call 781-238-7125. (5) You may view this service information at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.