Federal Register #FAA-2026-11791

Proposed FAA airworthiness directive for Bell Model 505 helicopters

The FAA is proposing an airworthiness directive for certain Bell Model 505 helicopters, not seeking to buy products or services. - Government buyer: U.S. Department of Transportation, Federal Aviation Administration (FAA). - OEM: Bell Textron Canada Limited, manufacturer of the affected Model 505 helicopters. - Proposed requirements: Revise the airworthiness limitations in the applicable maintenance manual or instructions for continued airworthiness, and update the approved maintenance or inspection program as applicable. Incorporate the new or more restrictive limitations and comply with Transport Canada AD CF-2026-20R1, subject to FAA exceptions. - Affected fleet and estimated cost: Approximately 191 U.S.-registered helicopters; the FAA estimates one work-hour and $85 per helicopter, or $16,235 total. - Safety purpose: Address revised fatigue assessments and reduce the risk of critical-part or primary-structure failure that could cause loss of helicopter control. - Timing: The proposed revision would be required within 30 days after the final directive takes effect. - Procurement scope: No products, part numbers, or purchase quantities are identified; this is a proposed regulatory requirement, not a procurement solicitation.

Description

The FAA proposes a new airworthiness directive for certain Bell Textron Canada Limited Model 505 helicopters. It would require revising the airworthiness limitation schedule in the existing maintenance manual or instructions for continued airworthiness, and the applicable approved maintenance or inspection program, to incorporate new or more restrictive airworthiness limitations. The proposal addresses a risk that critical parts or primary structural components could fail, potentially resulting in loss of helicopter control. Comments are due November 16, 2026.

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