# Proposed AD FAA-2020-1170: Bell Textron Canada Limited Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-11-13
- Products: Bell Textron Canada
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 23, 2021, 86 FR 15434
- Comments due: May 7, 2021
- Became: [AD 2021-11-13](https://openairdocs.org/ad/2021-11-13)
- Docket: FAA-2020-1170 (https://www.regulations.gov/docket/FAA-2020-1170, where comments are filed)
- Project: MCAI-2020-00720-R
- FR document: 2021-04200
- Official PDF: https://openairdocs.org/files/sha256/4d/2c/4d2c52b3715215f2dc2909921f1ed690724954c183ab0dc0f357b0af5f92df30 (from https://www.govinfo.gov/content/pkg/FR-2021-03-23/pdf/2021-04200.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/03/23/2021-04200/airworthiness-directives-bell-textron-canada-limited-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/18F14206978EFD5C862586A10057A212.0001
- Page: https://openairdocs.org/proposed/FAA-2020-1170

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for Bell Textron Canada Limited (Bell) Model 429 helicopters. This proposed AD would require inspecting certain serial-numbered Emergency Flotation System (EFS) inflation hoses and depending on the results of those inspections, marking certain parts or removing certain parts from service. This proposed AD was prompted by a report that a float compartment on an EFS did not inflate. The actions of this proposed AD are intended to address an unsafe condition on these products.

## Notices in this docket

- Mar 23, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-04200, comments due May 7, 2021 (https://www.federalregister.gov/documents/2021/03/23/2021-04200/airworthiness-directives-bell-textron-canada-limited-helicopters)

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