FAA Fixes Helicopter Engine Rules to Spare Some Fuel Units
Published Date: 4/28/2026
Rule
Summary
The FAA is updating rules for Safran ARRIUS 2F helicopter engines to remove certain fuel control units (FCUs) that might be unsafe. They’ve narrowed down which FCUs need replacing, so fewer parts are affected. This change kicks in June 2, 2026, and helps keep helicopters flying safely without unnecessary costs.
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Analyzed Economic Effects
2 provisions identified: 1 benefits, 1 costs, 0 mixed.
Mandatory FCU Removal and Replacement
If your helicopter has a Safran ARRIUS 2F engine, you must remove the affected fuel control unit (FCU) from service and replace it with a serviceable part by the compliance times in EASA AD 2024-0202R1. This AD is effective June 2, 2026; the FAA estimates the work is 1 work-hour ($85) plus parts costing $20,650, for a total cost per product of $20,735 and a total U.S. operator cost of $103,675 (for five affected engines).
Fewer FCUs Subject to Replacement
The new AD reduces the number of FCU serial numbers that are considered affected compared to the prior AD, so fewer parts must be removed and replaced. This narrowing takes effect June 2, 2026 and is intended to avoid unnecessary replacements of FCUs that were determined not to be subject to the unsafe manufacturing condition.
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