# Proposed AD FAA-2021-0497: Bell Textron Canada Limited Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-18-10
- Products: Bell Textron Canada
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 7, 2021, 86 FR 35692
- Comments due: August 23, 2021
- Became: [AD 2021-18-10](https://openairdocs.org/ad/2021-18-10)
- Docket: FAA-2021-0497 (https://www.regulations.gov/docket/FAA-2021-0497, where comments are filed)
- Project: 2019-SW-043-AD
- FR document: 2021-14400
- Official PDF: https://openairdocs.org/files/sha256/1d/d3/1dd304e3988fe5e0f9bd11fea0d0e2dac3f060b5ee7285993e73b58a8ef5796f (from https://www.govinfo.gov/content/pkg/FR-2021-07-07/pdf/2021-14400.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/07/07/2021-14400/airworthiness-directives-bell-textron-canada-limited-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F53ACDD930AD554C8625870B006FC8B9.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0497

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Bell Textron Canada Limited Model 429 helicopters. This proposed AD was prompted by three reports of unexpected forces or uncommanded inputs to the directional (yaw) control system. This proposed AD would require revising the existing Rotorcraft Flight Manual (RFM) for your helicopter. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jul 7, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-14400, comments due Aug 23, 2021 (https://www.federalregister.gov/documents/2021/07/07/2021-14400/airworthiness-directives-bell-textron-canada-limited-helicopters)

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