Airworthiness Directive · Amendment 39-23226 · Miscellaneous hardware
International Aero Engines LLC Engines
This AD applies to International Aero Engines, LLC Model PW1122G-JM, PW1124G-JM, PW1124G1-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.
The FAA is adopting a new airworthiness directive (AD) for all International Aero Engines, LLC (IAE LLC) Model PW1122G-JM, PW1124G-JM, PW1124G1-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. This AD was prompted by multiple reports of fan blade fracture events, three of which resulted in an engine under cowl fire or pool fire. This AD requires removal of one loop cushion clamp from the hydraulic fuel pressure fuel oil cooler fuel tube assembly (CP09 tube assembly), replacement of the thermal management system (TMS) clevis mounts with redesigned TMS clevis mounts, and reinstallation of the loop cushion clamp, as applicable. The FAA is issuing this AD to address the unsafe condition on these products.
(1) Within 30 days after the effective date of this AD or upon installation of an affected engine, whichever occurs later, remove one loop cushion clamp, part number ST1540-06, from the hydraulic fuel pressure fuel oil cooler fuel tube assembly (CP09 tube assembly) in accordance with the Accomplishment Instructions, For Engines Installed On Aircraft, paragraph C, or For Engines Not Installed On Aircraft, paragraph A, of Pratt & Whitney (PW) Alert Service Bulletin (ASB) PW1000G-C-73-00-0053-00A-930A-D, Issue No. 005, dated September 18, 2024.
(2) At the next engine shop visit after the effective date of this AD, replace the thermal management system (TMS) clevis mount with redesigned TMS clevis mounts in accordance with paragraphs AI, AJ, AL through AN, and AZ(6) of the Accomplishment Instructions of PW ASB PW1000G-C-72-00-0214-00A-930A-D, Issue No. 006, dated August 19, 2025.
The actions specified in paragraph (g)(2) of this AD constitute terminating action for the requirements of paragraph (g)(1) of this AD. This terminating action may be accomplished instead of the actions specified in paragraph (g)(1) of this AD.
For the purpose of this AD, an “engine shop visit” is the induction of an engine into the shop for maintenance.
