Airworthiness directives › 2025-26-04
AD 2025-26-04 Airworthiness Directives; International Aero Engines LLC Engines
Applicability*9
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.
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 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.
Unsafe condition
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. The FAA is issuing this AD to prevent a fuel leak resulting from a fan blade fracture. The unsafe condition, if not addressed, could result in an uncontrolled engine fire and damage to the airplane.
Affected ADs
None.
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