2013-24-17: High pressure compressor (HPC) rotor stage 2-5 spools

Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: PART 39--AIRWORTHINESS DIRECTIVES 0 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. Sec. 39.13 [Amended] 0 2. The FAA amends Sec. 39.13 by adding the following new airworthiness directive (AD): 2013-24-17 General Electric Company: Amendment 39-17694; Docket No. FAA-2013-0879; Directorate Identifier 2013-NE-30-AD. (a) Effective Date This AD is effective December 31, 2013. (b) Affected ADs None. (c) Applicability This AD applies to General Electric Company (GE) GE90-110B1 and GE90-115B turbofan engines with high pressure compressor (HPC) rotor stage 2-5 spools, part numbers (P/Ns) 351-103-106-0, 351-103-107-0, 351-103-141-0, 351-103-142-0, 351-103-144-0, 351-103-145-0, 351-103- 148-0, 351-103-149-0, and 351-103-151-0, with spool serial numbers listed in paragraph 4, Appendix A of GE Service Bulletin (SB) No. GE90-100 S/B 72-0499, dated August 14, 2013. (d) Unsafe Condition This AD was prompted by reports of cracks in HPC rotor stage 2-5 spool aft spacer arms. We are issuing this AD to prevent failure of a critical life-limited rotating engine part, which could result in an uncontained engine failure and damage to the airplane. (e) Compliance Comply with this AD within the compliance times specified, unless already done. (f) Parts Removal Remove from service HPC rotor stage 2-5 spools with serial numbers listed in paragraph 4, Appendix A of GE SB No. GE90-100 S/B 72-0499, dated August 14, 2013, as follows: (1) For spools with fewer than 4,500 cycles since new (CSN) on the effective date of this AD, before exceeding 5,000 CSN. (2) For spools with 4,500 CSN or more but fewer than 5,200 CSN on the effective date of this AD, within an additional 500 cycles in service (CIS) after the effective date of this AD but not to exceed 5,500 CSN. (3) For spools with 5,200 CSN or more but fewer than 5,600 CSN on the effective date of this AD, within an additional 300 CIS after the effective date of this AD but not to exceed 5,800 CSN. (4) For spools with 5,600 CSN or more but fewer than 5,800 CSN on the effective date of this AD, within an additional 200 CIS after the effective date of this AD but not to exceed 5,850 CSN. (5) For spools with 5,800 CSN or more but fewer than 6,000 CSN on the effective date of this AD, within an additional 50 CIS after the effective date of this AD but not to exceed 6,000 CSN. (6) For spools with 6,000 CSN or more on the effective date of this AD, before the next flight. (7) For spools that are not installed on the effective date of this AD and are subsequently installed onto any engine after the effective date of this AD, before exceeding 5,000 CSN. (g) Prohibition Statement After the effective date of this AD, do not install or re- install onto any engine any HPC rotor stage 2-5 spool with a serial number listed in paragraph 4, Appendix A of GE SB No. GE90-100 S/B 72-0499, dated August 14, 2013, that exceeds 5,000 CSN. (h) Alternative Methods of Compliance (AMOCs) The Manager, Engine Certification Office, may approve alternative methods of compliance for this AD. Use the procedures found in 14 CFR 39.19 to make your request. (i) Related Information For more information about this AD, contact Tomasz Rakowski, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: (781) 238-7735; fax: (781) 238-7199; email: [email protected]. (j) 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) Youmust 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 No. GE90-100 S/B 72-0499, dated August 14, 2013. (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; email: [email protected]. (4) You may view this service information at FAA, Engine & Propeller Directorate, 12 New England Executive Park, 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.