2021-01-03: 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\n2021-01-03 International Aero Engines AG: Amendment 39-21379; Docket No. FAA-2020-1168; Project Identifier AD-2020-01568-E. \n\n(a) Effective Date \n\n\n\tThis airworthiness directive (AD) is effective January 21, 2021. \n\n(b) Affected ADs \n\n\n\tNone. \n\n(c) Applicability \n\n\n\tThis AD applies to International Aero Engines AG (IAE) V2500-A1, 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, witha serial number (S/N) listed in Figure 1 to paragraph (c) of this AD; or \n\t(2) HPT 2nd-stage disk, P/N 2A4802 or 2A1202, with an S/N listed in Figure 2 to paragraph (c) of this AD. \n\nFigure 1 to Paragraph (c)--HPT 1st-Stage Disks, P/N 2A5001 \n\nHPT 1st-Stage Disk S/N \n\tPKLBMR8122 \n\tPKLBN95688 \n\tPKLBPD1563 \n\tPKLBR09920 \n\tPKLBR16496 \n\tPKLBR19225 \n\tPKLBR25636 \n\tPKLBR28076 \n\tPKLBR34562 \n\tPKLBR52354 \n\tPKLBR69530 \n\tPKLBR82479 \n\tPKLBRJ9427 \n\tPKLBRN5510 \n\tPKLBRT5081 \n\tPKLBRU7299 \n\tPKLBRW8547 \n\tPKLBRW9395 \n\tPKLBSJ7141 \n\tPKLBSM8377 \n\nFigure 2 to Paragraph (c)--HPT 2nd-Stage Disks, P/N 2A4802 or 2A1202 \n\nHPT 2nd-Stage Disk S/N \n\tPKLBJ09996 \n\tPKLBJ13601 \n\tPKLBJ80883 \n\tPKLBKL8627 \n\tPKLBLJ9333 \n\tPKLBP87124 \n\tPKLBPY9696 \n\tPKLBSL8699 \n\n(d) Subject \n\n\n\tJoint Aircraft System Component (JASC) Code 7250, Turbine Section. \n\n(e) Unsafe Condition \n\n\n\tThis AD was prompted by an analysis performed by the manufacturer of an event involving an uncontained failure ofan 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 and HPT 2nd-stage disks. 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(f) Compliance \n\n\n\tComply with this AD within the compliance times specified, unless already done. \n\n(g) Required Actions \n\n\n\t(1) For IAE model turbofan engines with an HPT 1st-stage disk, P/N 2A5001, with a S/N listed in Figure 1 to paragraph (c) of this AD, within 50 flight cycles or 30 days after the effective date of this AD, whichever comes first, remove the HPT 1st-stage disk from service. \n\t(2) For IAE model turbofan engines with an HPT 2nd-stage disk, P/N 2A4802 or 2A1202, with a S/N listed in Figure 2 to paragraph (c) of this AD, within 50 flight cycles or 30 days after the effective date of this AD, whichever comes first, removethe HPT 2nd-stage disk from service. \n\n(h) Installation Prohibition \n\n\n\tAfter the effective date of this AD, do not install onto any engine an HPT 1st-stage or HPT 2nd-stage disk with a P/N and S/N listed in paragraph (c) of this AD. \n\n(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, \n\n((Page 461)) \n\nif 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 districtoffice. \n\n(j) Related Information \n\n\n\tFor more information about this AD, contact Nicholas Paine, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: (781) 238-7116; fax: (781) 238-7199; email: nicholas.j.paine@faa.gov. \n\n(k) Material Incorporated by Reference \n\n\n\tNone. \n\n\n\tIssued on December 28, 2020. Lance T. Gant, Director, Compliance & Airworthiness Division, Aircraft Certification Service. (FR Doc. 2021-00053 Filed 1-5-21; 8:45 am) BILLING CODE 4910-13-P