FAA Demands Fuel Injector Checks on Safran Helicopter Engines Now
Published Date: 2/25/2025
Proposed Rule
Summary
The FAA wants all Safran ARRIUS 2B2 helicopter engines to get new safety checks because fuel can clog a key part called the preference injector, risking engine failure. They’re proposing regular tests, possible part replacements, and a software update to keep engines running safely. Owners should act before April 11, 2025, to avoid costly repairs and keep flying smooth.
Analyzed Economic Effects
3 provisions identified: 0 benefits, 3 costs, 0 mixed.
Required injector replacements and on-condition costs
The proposed AD would require replacement of the preference injector when necessary and repetitive replacements as specified in EASA AD 2024-0195R1. The FAA estimates injector replacement costs $1,904 per engine (including $1,819 parts and $85 labor); applied to 186 engines, the FAA estimates a total of $354,144 in replacement parts and labor for U.S. operators. The FAA also lists the same $1,904 per-product cost for on-condition replacements based on test results.
One-time EECU software upgrade required for some engines
For certain ARRIUS 2B2 engines installed on AHD EC135T2, EC135T2+, EC635T2, or EC635T2+ helicopters, the proposed AD would require a one-time EECU software upgrade (modification TU 173) as specified in EASA AD 2024-0195R1. The FAA estimates the EECU software upgrade would take 7 work-hours (cost $595 per engine) for 132 engines, totaling $78,540 for U.S. operators; the upgrade is described as reducing the clogging rate and allowing automatic accomplishment of the non-extinguishing test.
Mandatory initial and repetitive flameout tests
If you own or operate a Safran ARRIUS 2B2 engine, the proposed rule would require initial and repetitive non-extinguishing tests for engine flameout as specified in EASA AD 2024-0195R1. The FAA estimates the initial test would cost $85 per engine (affecting 186 U.S.-registered engines, total $15,810) and the repetitive test is estimated at $85 per engine (54 engines shown in the FAA estimate, total $4,590).
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Key Dates
Department and Agencies
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