2021-14-19: Turbine Section

The Amendment \n\n\n\tAccordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: \n\nPART 39--AIRWORTHINESS DIRECTIVES \n\n0 1. The authority citation for part 39 continues to read as follows: \n\n\n\tAuthority: 49 U.S.C. 106(g), 40113, 44701. \n\n\n\nSec. 39.13 (Amended) \n\n0 2. The FAA amends Sec. 39.13 by adding the following new airworthiness directive: \n\n2021-14-19 International Aero Engines AG: Amendment 39-21646; Docket No. FAA-2021-0544; Project Identifier AD-2021-00642-E. \n\n(a) Effective Date \n\n\n\tThis airworthiness directive (AD) is effective August 5, 2021. \n\n\n\t(b) Affected ADs \n\n\n\tNone. \n\n\n\t(c) Applicability \n\n\n\tThis AD applies to International Aero Engines AG (IAE) V2522-A5, V2524-A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530- A5, V2531-E5, and V2533-A5 model turbofan engines with an installed: \n\t(1) High-pressure turbine (HPT) 1st-stage disk, part number (P/ N) 2A5001, with a serial number (S/N) listed in Accomplishment Instructions, Table 1, of Pratt & Whitney (P&W) Special Instruction (SI) No. 112F-21, dated May 24, 2021 (P&W SI No. 112F-21); or \n\t(2) HPT 2nd-stage disk, P/N 2A4802, with an S/N listed in Accomplishment Instructions, Table 2, of P&W SI No. 112F-21, or S/N listed in Accomplishment Instructions, Table 1, P&W SI No. 114F-21, dated May 24, 2021 (P&W SI No. 114F-21). \n\n\n\t(d) Subject \n\n\n\tJoint Aircraft System Component (JASC) Code 7250, Turbine Section. \n\n\n\t(e) Unsafe Condition \n\n\n\tThis AD was prompted by a review of investigative findings from an event involving an uncontained failure of a HPT 1st-stage disk that resulted in high-energy debris penetrating the engine cowling. The FAA is issuing this AD to prevent failure of the HPT 1st-stage disk and HPT 2nd-stage disk. The unsafe condition, if not addressed, could result in uncontained HPT disk failure, damage to the engine, damage to the airplane, and loss of the airplane. \n\n\n\t(f) Compliance \n\n\n\tComply with this AD within the compliance times specified, unless already done. \n\n\n\t(g) Required Actions \n\n\n\t(1) For an HPT 1st-stage disk, P/N 2A5001, with an S/N listed in Accomplishment Instructions, Table 1, of P&W SI No. 112F-21, that has been installed at any time in an IAE V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, or V2533-A5 model turbofan engine during operation, within 100 flight cycles (FCs) after the effective date of this AD, perform an ultrasonic inspection (USI) of the HPT 1st- stage disk using the Accomplishment Instructions, paragraph 6, of IAE NMSB V2500-ENG-72-0713, Revision 1. \n\t(2) For an HPT 1st-stage disk, P/N 2A5001, with an S/N listed in Accomplishment Instructions, Table 1, of P&W SI No. 112F-21, that has only been installed in an IAE V2522-A5, V2524-A5, V2525-D5, or V2527-A5 model turbofan engine during operation, within 220 FCs after the effective date of this AD, perform a USI of the HPT 1st- stage disk using the Accomplishment Instructions, paragraph 6, of IAE NMSB V2500-ENG-72-0713, Revision 1. \n\t(3) For an HPT 2nd-stage disk, P/N 2A4802, with an S/N listed in Accomplishment Instructions, Table 2, of P&W SI No. 112F-21, that has been installed at any time in an IAE V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, or V2533-A5 model turbofan engine during operation, within 385 FCs after the effective date of this AD, perform a USI of the HPT 2nd-stage disk using the Accomplishment Instructions, paragraph 7, of IAE NMSB V2500-ENG-72-0713, Revision 1. \n\t(4) For an HPT 2nd-stage disk, P/N 2A4802, with an S/N listed in Accomplishment Instructions, Table 2, of P&W SI No. 112F-21, that has only been installed in an IAE V2522-A5, V2524-A5, V2525-D5, or V2527-A5 model turbofan engine during operation, within 620 FCs after the effective date of this AD, perform a USI of the HPT 2nd- stage disk using the Accomplishment Instructions, paragraph 7, of IAE NMSB V2500-ENG-72-0713, Revision 1. \n\t(5) For an HPT 2nd-stage disk, P/N 2A4802, with an S/N listed in Accomplishment Instructions, Table 1, of P&W SI No. 114F-21, that has only been installed in an IAE V2531-E5 model turbofan engine during operation, within 385 FCs after the effective date of this AD, perform a USI of the HPT 2nd-stage disk using the Accomplishment Instructions, paragraph 7, of IAE NMSB V2500-E5-72-0015. \n\n((Page 38413)) \n\n\n\t(6) If, during the USI required by paragraphs (g)(1) through (5) of this AD, a HPT 1st-stage disk or HPT 2nd-stage disk does not pass the inspection as specified in the Accomplishment Instructions, paragraph 8, of IAE NMSB V2500-ENG-72-0713, Revision 1, or IAE NMSB V2500-E5-72-0015, as applicable, before further flight, remove the HPT 1st-stage disk or 2nd-stage disk, as applicable, from service and replace with a part eligible for installation. \n\n\n\t(h) Definition \n\n\n\tFor the purpose for this AD, a ''part eligible for installation'' is: \n\t(1) An HPT 1st-stage disk or HPT 2nd-stage disk listed in Appendix A, Tables 1 and 2, of IAE NMSB V2500-ENG-72-0713, Revision 1, or Appendix A, Tables 1 and 2, of IAE NMSB V2500-E5-72-0015, that passed the USI required by paragraphs (g)(1) through (5) of this AD; or \n\t(2) An HPT 1st-stage disk or HPT 2nd-stage disk that is not listed in Appendix A, Tables 1 and 2, of IAE NMSB V2500-ENG-72-0713, Revision 1, or Appendix A, Tables 1 and 2, of IAE NMSB V2500-E5-72- 0015. \n\n\n\t(i) Alternative Methods of Compliance (AMOCs) \n\n\n\t(1) The Manager, ECO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in Related Information. You may email your request to: ANE-AD-AMOC@faa.gov. \n\t(2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office. \n\n\n\t(j) Related Information \n\n\n\tFor more information about this AD, contact Alberto Hernandez, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: (781) 238-7329; fax: (781) 238-7199; email: Alberto.J.Hernandez@faa.gov. \n\n\n\t(k) Material Incorporated by Reference \n\n\n\t(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. \n\t(2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. \n\t(3) The following service information was approved for IBR on August 5, 2021. \n\t(i) Pratt & Whitney (P&W) Special Instruction (SI) No. 112F-21, dated May 24, 2021. \n\t(ii) P&W SI No. 114F-21, dated May 24, 2021. \n\t(4) The following service information was approved for IBR on July 13, 2021 (86 FR 30380, June 8, 2021). \n\t(i) International Aero Engines (IAE) Non-Modification Service Bulletin (NMSB) No. V2500-ENG-72-0713, Revision 1, dated January 26, 2021. \n\t(ii) IAE NMSB No. V2500-E5-72-0015, dated December 15, 2020. \n\t(5) For service information identified in this AD, contact International Aero Engines AG, 400 Main Street, East Hartford, CT 06118; phone: (800) 565-0140; email: help24@pw.utc.com; website: http://fleetcare.pw.utc.com. \n\t(6) You may view this service information at FAA, Airworthiness Products Section, Operational Safety Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call (781) 238-7759. \n\t(7) You may view this service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, email: fedreg.legal@nara.gov, or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html. \n\n\n\tIssued on July 15, 2021. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. (FR Doc. 2021-15486 Filed 7-16-21; 4:15 pm) BILLING CODE 4910-13-P