FAA Orders Bell Helicopters to Swap Crack-Prone Stabilizers
Published Date: 4/8/2026
Proposed Rule
Summary
If you fly a Bell Textron Canada Model 505 helicopter, listen up! The FAA wants you to keep checking the vertical stabilizer’s top end cap for cracks, but now there’s a new, stronger one-piece design to replace the old part. Swapping to this improved part stops the need for constant inspections and keeps your chopper safer—just make sure to act before May 26, 2026, and be ready for some replacement costs.
Analyzed Economic Effects
4 provisions identified: 2 benefits, 2 costs, 0 mixed.
Mandatory top-end cap replacement
If you operate a Bell Textron Canada Model 505 helicopter, you must continue the inspections required by AD 2024-02-55 and replace the vertical stabilizer top end cap assembly with part number SLS-704-701-101. Replacing the top end cap P/N SLS-704-701-101 is the terminating action for the recurring detailed visual inspections.
Estimated per-helicopter compliance costs
The FAA estimates costs to comply for U.S. operators: an initial inspection costs about $170 (2 work-hours at $85/hr), recurring inspections cost about $85 each (1 work-hour), and replacing the top end cap is estimated at $2,510 (6 work-hours = $510 plus $2,000 parts). The FAA estimates this proposed AD would affect 150 U.S.-registered helicopters, giving aggregate estimated costs of $25,500 for initial inspections, $12,750 for one round of recurring inspections, and $376,500 for replacements.
Production helicopters excluded from rule
The proposed AD would limit applicability to exclude certain serial-numbered Model 505 helicopters that had the improved one-piece vertical stabilizer top end cap P/N SLS-030-701-149 installed during production. If your helicopter has that improved production-installed top end cap, it would be excluded from the AD's inspection/replacement requirements.
Manufacturer warranty may reduce costs
The FAA notes the manufacturer may cover some of the costs of the required actions under warranty, which could reduce the out-of-pocket cost for affected operators. Whether and how much is covered depends on the operator's warranty situation with the manufacturer.
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