# Proposed AD FAA-2026-4658: Bell Textron Canada Limited Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2026-18-10
- Products: Bell Textron Canada
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 22, 2026, 91 FR 37057
- Comments due: August 6, 2026
- Became: [AD 2026-18-10](https://openairdocs.org/ad/2026-18-10)
- Docket: FAA-2026-4658 (https://www.regulations.gov/docket/FAA-2026-4658, where comments are filed)
- Project: MCAI-2026-00014-R
- FR document: 2026-12480
- Official PDF: https://openairdocs.org/files/sha256/a4/fe/a4fe63685ed9eaa743ed91d934aab4d744b16a1f6316f84f7fe946c2ee70325f (from https://www.govinfo.gov/content/pkg/FR-2026-06-22/pdf/2026-12480.pdf)
- Federal Register: https://www.federalregister.gov/documents/2026/06/22/2026-12480/airworthiness-directives-bell-textron-canada-limited-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2026-12480-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2026-4658

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Bell Textron Canada Limited Model 505 helicopters. This proposed AD was prompted by reports that the identification plate affixed to certain tail cone assemblies contains an incorrect part number (P/N), which may not accurately convey the life limit. This proposed AD would require verifying the tail cone assembly part number and, if necessary, replacing the incorrect tail cone assembly identification plate with a new tail cone assembly identification plate containing the correct P/N and updating the existing log card or equivalent record for the helicopter. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jun 22, 2026: Notice of proposed rulemaking (NPRM). (first notice), FR document 2026-12480, comments due Aug 6, 2026 (https://www.federalregister.gov/documents/2026/06/22/2026-12480/airworthiness-directives-bell-textron-canada-limited-helicopters)

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