Airworthiness directives › 2024-05-11
AD 2024-05-11 Airworthiness Directives; International Aero Engines, LLC Engines
Applicability*9
(1) This AD applies to International Aero Engines, LLC (IAE LLC) Model PW1122G-JM, PW1124G1-JM, PW1124G-JM, PW1127G-JM, PW1127G1-JM, PW1127G1A-JM, PW1127G1B-JM, PW1127GA-JM, PW1129G-JM, PW1130G-JM, PW1133G-JM, PW1133GA-JM, PW1428G-JM, PW1428GA-JM, PW1428GH-JM, PW1431G-JM, PW1431GA-JM, and PW1431GH-JM engines with an installed: (i) High-pressure compressor (HPC) 7th-stage integrally bladed rotor (IBR-7) having part number (P/N) 30G2307 or 30G4407; (ii) HPC 8th-stage integrally bladed rotor (IBR-8) having P/N 30G5608, 30G5908, or 30G8908; (iii) HPC rear hub having P/N 30G4008 or 30G8208; (iv) High-pressure turbine (HPT) 1st-stage hub having P/N 30G4201, 30G6201, or 30G7301; or (v) HPT 2nd-stage hub having P/N 30G3902, 30G5502, or 30G6602. (2) This AD does not apply to parts identified in paragraphs (c)(1)(i) through (v) of this AD if those parts were manufactured from powdered metal material produced prior to November 1, 2015, or after September 1, 2021, as identified by part serial number in Tables 1, 2, and 3 of PW Special Instruction (SI) No. 222F-23, Revision B, dated March 1, 2024 (PW SI No. 222F-23, Revision B) or in the original manufacturing records for the part. (3) If the original manufacturing records do not identify the production date of the powdered metal used to make the parts identified in paragraphs (c)(1)(i) through (v) of this AD, and the part serial number is not listed in Tables 1, 2, and 3 of PW SI No. 222F-23, Revision B, then the part is subject to the requirements of this AD.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) This paragraph restates the requirements of paragraph (g)(1) of AD 2023-16-07. For Group 1 and Group 2 engines with an installed HPT 1st-stage hub having part number (P/N) 30G7301 and a serial number (S/N) listed in Tables 1, 2, 3, or 4 of PW Special Instruction (SI) No. 149F-23, dated August 4, 2023 (PW SI No. 149F-23), within 30 days after August 28, 2023 (the effective date of AD 2023-16-07), perform an AUSI of the HPT 1st-stage hubs for cracks in accordance with the Accomplishment Instructions, paragraph 9.A. or 9.B., as applicable, of Pratt & Whitney (PW) Service Bulletin PW1000G-C-72-00-0188-00A-930A-D, Issue No: 002, dated July 8, 2022 (PW1000G-C-72-00-0188-00A-930A-D, Issue No: 002). (2) This paragraph restates the requirements of paragraph (g)(2) of AD 2023-16-07. For Group 1 and Group 2 engines with an installed HPT 2nd-stage hub having P/N 30G6602 and an S/N listed in Tables 1, 2, 3, or 4 of PW SI No. 149F-23, within 30 days after August 28, 2023 (the effective date of AD 2023-16-07), perform an AUSI of the HPT 2nd-stage hubs for cracks in accordance with the Accomplishment Instructions, paragraph 9.C. or 9.D., as applicable, of PW1000G-C-72-00-0188-00A-930A-D, Issue No: 002.
Unsafe condition
This AD was prompted by an analysis of an event involving an IAE LLC Model PW1127GA-JM engine, which experienced failure of an HPC IBR-7 that resulted in an engine shutdown and aborted takeoff. The FAA is issuing this AD to prevent failure of the HPT 1st-stage hub, HPT 2nd-stage hub, HPC IBR-7, and HPC IBR-8. The unsafe condition, if not addressed, could result in uncontained hub failure, release of high-energy debris, damage to the engine, damage to the airplane, and loss of the airplane.
Affected ADs
(1) This AD replaces AD 2022-19-15, Amendment 39-22184 (87 FR 59660, October 3, 2022; corrected October 24, 2022 (87 FR 64156)). (2) This AD replaces AD 2023-16-07, Amendment 39-22526 (88 FR 56999, August 22, 2023) (AD 2023-16-07).
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