Federal Register #2026-10360

FAA Solicitation for Pratt & Whitney RTX Engine Inspections and Component Replacements

The Federal Aviation Administration (FAA), under the Department of Transportation, is soliciting inspection and replacement services for specific Pratt & Whitney RTX Corporation aircraft engine components to comply with a new airworthiness directive (AD): - Government Buyer: - Federal Aviation Administration (FAA), Department of Transportation - Airworthiness Products Section, Operational Safety Branch - OEMs and Vendors: - Pratt & Whitney RTX Corporation (OEM) - International Aero Engines, LLC (OEM, referenced in incident prompting AD) - Products/Services Requested: - Repetitive angle ultrasonic scan inspections (AUSIs) for: - HPC 15th-stage disks (part numbers: 51S115, 51S315, 55H615, 56H015) - Front turbine hubs (part numbers: 55L801, 55L901) - HPT 1st-stage air seals (part numbers: 50L663, 50L959; 6 units with specific serial numbers require mandatory replacement) - HPT 2nd-stage hubs (part numbers: 53L202, 54L802) - Removal and replacement of any components found with cracks - For certain serial numbers, mandatory removal and replacement of HPT 1st-stage air seals at the next piece part opportunity - Unique/Notable Requirements: - Only new zero-time parts with FAA Form 81303 dated July 1, 2025 or later are eligible for installation - Certificate of conformance per specific NDIP standards required for each part - Optional terminating action by updating the engine manual Airworthiness Limitations Section (ALS) - The directive is prompted by a safety incident involving an International Aero Engines Model PW1127GA-JM engine - Engine Models Covered: - PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, PW4090-3 - Place of Performance/Delivery: - FAA Airworthiness Products Section, Operational Safety Branch, 1200 District Avenue, Burlington, MA - FAA Aviation Safety Engineer Office, 2200 South 216th Street, Des Moines, WA - Docket Operations, 1200 New Jersey Avenue SE, Washington, DC

Description

The FAA is adopting a new airworthiness directive (AD) for certain Pratt & Whitney RTX Corporation Model PW4074, PW4074D, PW4077, PW4077D, PW4084D, PW4090, and PW4090-3 engines. This AD was prompted by an event involving an International Aero Engines Model PW1127GA-JM engine that experienced a high-pressure compressor 7th-stage integrally bladed rotor separation resulting in an aborted takeoff. The directive requires repetitive angle ultrasonic scan inspections of specific engine components for crack indications and mandates removal and replacement if necessary. The AD aims to address the unsafe condition on these products and is effective June 26, 2026.

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