Federal Register #FAA-2025-2555

FAA Directive: Replacement of 3rd Stage HPC Rotor Blades for International Aero Engines AG Models

The Federal Aviation Administration (FAA), under the Department of Transportation, has issued an airworthiness directive targeting specific International Aero Engines AG (IAE AG) engine models. - Government Buyer: - Federal Aviation Administration (FAA), Aviation Safety Office - OEM Highlight: - International Aero Engines AG (IAE AG) is the sole OEM referenced - Engine Models Affected: - V2522-A5, V2524-A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, V2531-E5, V2533-A5 - Products/Parts Required: - Replacement of 3rd stage high-pressure compressor (HPC) rotor blades - Part numbers: 6A8353 and 6A8688 - Quantity: 1,462 engines affected - Notable Requirements: - Replacement must use parts eligible for installation (reworked or new blades) - Directive issued due to risk of shroud wear and blade failure, which can cause engine fires, unplanned removals, aborted takeoffs, and in-flight shutdowns - Estimated compliance cost: $30,085 per engine for reworked blades, up to $225,000 for new blades - Replacement to be performed at the next engine shop visit after the directive's effective date - No service line items or additional vendors are specified

Description

The FAA is adopting a new airworthiness directive (AD) for certain International Aero Engines AG (IAE AG) Model V2522-A5, V2524-A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, V2531-E5, and V2533-A5 engines. This AD was prompted by a manufacturer investigation that revealed that certain 3rd stage high pressure compressor (HPC) rotor blades were susceptible to shroud wear and blade failure. The AD requires replacement of affected 3rd stage HPC rotor blades with parts eligible for installation to address the unsafe condition. The directive is effective September 24, 2026, and aims to ensure continued safety in operation of these engines.

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