Federal Register #20260812

FAA Directive: Safran ARRIUS 2F Engine Fuel Control Unit Replacement

This opportunity involves a new FAA airworthiness directive impacting Safran ARRIUS 2F helicopter engines: - Government Buyer: - Federal Aviation Administration (FAA), Department of Transportation - OEMs and Vendors: - Safran Helicopter Engines, S.A. (formerly Turbomeca, S.A.) is the primary OEM - Products/Services Requested: - Removal and replacement of affected fuel control units (FCUs) on ARRIUS 2F engines - No specific part numbers or quantities provided - Notable Requirements: - Addresses missing lubricating and balancing grooves on FCU fuel pump bearings - Compliance with European Union Aviation Safety Agency (EASA) AD 2024-0202R1 is required - Estimated cost for U.S. operators is $103,675 - Intended to prevent uncommanded in-flight shutdowns and loss of control in single-engine helicopters - Locations: - No specific place of performance; FAA offices in Washington, DC, Burlington, MA, and Westbury, NY are referenced for administrative purposes

Description

The FAA is issuing a final rule superseding Airworthiness Directive (AD) 2024-24-02 for all Safran Model ARRIUS 2F engines. The AD requires removal of affected fuel control units (FCUs) from service and replacement with serviceable parts, reducing the number of affected FCUs based on updated serial number information. This action addresses an unsafe condition related to missing lubricating and balancing grooves on FCU fuel pump bearings, which could cause uncommanded in-flight shutdowns and reduced control of single-engine helicopters. The AD is effective June 2, 2026.

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