# Proposed AD FAA-2021-1078: Bell Textron Canada Limited Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-08-11
- Action: Notice of proposed rulemaking (NPRM).
- Published: January 10, 2022, 87 FR 1083
- Comments due: February 11, 2022
- Became: [AD 2022-08-11](https://openairdocs.org/ad/2022-08-11)
- Docket: FAA-2021-1078 (https://www.regulations.gov/docket/FAA-2021-1078, where comments are filed)
- Project: MCAI-2020-01574-R
- FR document: R1-2021-28089
- Official PDF: https://openairdocs.org/files/sha256/81/f4/81f467f15f25c121c6fd12a4bcacd84eeee708eb67c76077e5f9eb3f8d071ffc (from https://www.govinfo.gov/content/pkg/FR-2022-01-10/pdf/R1-2021-28089.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/01/10/R1-2021-28089/airworthiness-directives-bell-textron-canada-limited-helicopters
- Page: https://openairdocs.org/proposed/FAA-2021-1078

## 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 in-service reports of the loss of display and subsequent recovery of certain display units (DUs). This proposed AD would require revising the existing rotorcraft flight manual supplement (RFMS) for your helicopter and disabling the traffic alert and collision avoidance system (TCAS) POP-UP feature for certain DUs. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Dec 28, 2021: Notice of proposed rulemaking (NPRM). (first notice), comments due Feb 11, 2022 (https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2021-28089-00000000000.0001)
- Dec 28, 2021: Notice of proposed rulemaking (NPRM)., FR document 2021-28089, comments due Feb 11, 2022 (https://www.federalregister.gov/documents/2021/12/28/2021-28089/airworthiness-directives-bell-textron-canada-limited-helicopters)
- Jan 10, 2022: Notice of proposed rulemaking (NPRM)., FR document R1-2021-28089, comments due Feb 11, 2022 (https://www.federalregister.gov/documents/2022/01/10/R1-2021-28089/airworthiness-directives-bell-textron-canada-limited-helicopters)

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