FAA Narrows Helicopter Engine Fix Rules to Ease Burden
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 flights safe without causing extra hassle or big costs for owners.
Analyzed Economic Effects
3 provisions identified: 2 benefits, 1 costs, 0 mixed.
Required removal and replacement of FCUs
If your helicopter uses a Safran ARRIUS 2F engine with an affected fuel control unit (FCU), the FAA requires removing that FCU from service and replacing it with a serviceable part. The AD is effective June 2, 2026; the FAA estimates 1 work-hour at $85 plus parts cost $20,650, for a cost per product of $20,735 and a total U.S. operator cost estimate of $103,675 (affecting five engines on U.S. registry).
Prevents uncommanded engine shut-downs
The AD addresses a defect (missing lubricating and balancing groove on FCU fuel pump bearings) that was linked to an uncommanded in-flight shut-down (IFSD) of an ARRIUS 2F engine. Replacing affected FCUs is intended to detect and correct this condition to prevent an IFSD and a significant reduction of control of a single-engine helicopter.
Fewer FCU serial numbers affected
The FAA narrowed the list of affected FCU serial numbers, so fewer FCUs must be removed or replaced than under the prior AD. This reduces how many owners/operators will need the replacement part and lowers the number of helicopters subject to the replacement requirement.
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