Airworthiness directives › 2023-16-07
AD 2023-16-07 Airworthiness Directives; International Aero Engines, LLC Engines
Applicability*9
This AD applies to International Aero Engines, LLC (IAE LLC) Model PW1122G-JM, PW1124G1-JM, PW1124G-JM, PW1127G-JM, PW1127G1-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: (1) High-pressure turbine (HPT) 1st-stage hub, part number (P/N) 30G6201 or 30G7301, with a serial number (S/N) listed in Tables 1, 2, 3, or 4 of Pratt & Whitney (PW) Special Instruction No. 149F-23, dated August 4, 2023; or (2) HPT 2nd-stage hub, P/N 30G5502 or 30G6602, with an S/N listed in Tables 1, 2, 3, or 4 of PW Special Instruction No. 149F-23, dated August 4, 2023.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) Within 30 days after the effective date of this AD, perform an ultrasonic inspection (USI) of the HPT 1st-stage hubs for cracks in accordance with the Accomplishment Instructions, paragraph 9.A. or 9.B., as applicable, of PW Service Bulletin (SB) PW1000G-C-72-00-0188-00A-930A-D, Issue No: 002, dated July 8, 2022 (PW1000G-C-72-00-0188-00A-930A-D, Issue 002). (2) Within 30 days after the effective date of this AD, perform a USI of the HPT 2nd-stage hubs for cracks in accordance with the Accomplishment Instructions, paragraph 9.C. or 9.D., as applicable, of PW SB PW1000G-C-72-00-0188-00A-930A-D, Issue 002. (3) If a rejectable indication is found during the inspections required by paragraph (g)(1) or (2) of this AD, before further flight, replace the HPT 1st-stage hub or HPT 2nd-stage hub with a part eligible for installation.
Unsafe condition
This AD was prompted by an analysis of an event involving an IAE LLC Model PW1127GA-JM engine, which experienced a failure of a high-pressure compressor 7th-stage integrally bladed rotor that resulted in an aborted takeoff. The FAA is issuing this AD to prevent failure of the HPT 1st-stage hub and HPT 2nd-stage hub. 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
AD 2022-19-15, Amendment 39-22184 (87 FR 59660, October 3, 2022; corrected 87 FR 64156, October 24, 2022) (AD 2022-19-15) is related to this AD.
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