# Proposed AD FAA-2018-0334: Bell Helicopter Textron Canada Limited Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2020-20-06
- Products: Bell Helicopter Textron Canada
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 20, 2020, 85 FR 16019
- Comments due: May 19, 2020
- Became: [AD 2020-20-06](https://openairdocs.org/ad/2020-20-06)
- Docket: FAA-2018-0334 (https://www.regulations.gov/docket/FAA-2018-0334, where comments are filed)
- FR document: 2020-05379
- Official PDF: https://openairdocs.org/files/sha256/5d/79/5d790e10f0440777f2db1af7b5eb544ca524938c910ca4aa2b6b80a8c9f82956 (from https://www.govinfo.gov/content/pkg/FR-2020-03-20/pdf/2020-05379.pdf)
- Federal Register: https://www.federalregister.gov/documents/2020/03/20/2020-05379/airworthiness-directives-bell-helicopter-textron-canada-limited-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4D991C5C5D6F081286258535004B711F.0001
- Page: https://openairdocs.org/proposed/FAA-2018-0334

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for Bell Helicopter Textron Canada Limited (BHTC) Model 429 helicopters. This proposed AD would require repetitive inspections of certain cyclic and collective assembly bearings. This proposed AD is prompted by reports that precipitation can lead to reduced effectiveness of the grease in the bearings. The actions of this proposed AD are intended to address an unsafe condition on these products.

## Notices in this docket

- Mar 20, 2020: Notice of proposed rulemaking (NPRM). (first notice), FR document 2020-05379, comments due May 19, 2020 (https://www.federalregister.gov/documents/2020/03/20/2020-05379/airworthiness-directives-bell-helicopter-textron-canada-limited-helicopters)

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