# Proposed AD FAA-2021-0185: Bell Textron Canada Limited (Type Certificate Previously Held by Bell Helicopter Textron Canada Limited) Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-11-19
- Products: Bell Textron Canada
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 22, 2021, 86 FR 15146
- Comments due: May 6, 2021
- Became: [AD 2021-11-19](https://openairdocs.org/ad/2021-11-19)
- Docket: FAA-2021-0185 (https://www.regulations.gov/docket/FAA-2021-0185, where comments are filed)
- Project: MCAI-2020-00265-R
- FR document: 2021-05433
- Official PDF: https://openairdocs.org/files/sha256/9b/18/9b1803400b4f6c69c9f6ae6a21fa7b85c7144c6a74afc3fbc046b977e17851ce (from https://www.govinfo.gov/content/pkg/FR-2021-03-22/pdf/2021-05433.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/03/22/2021-05433/airworthiness-directives-bell-textron-canada-limited-type-certificate-previously-held-by-bell
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BA286E4E55E53CC7862586A100503BBB.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0185

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for Bell Textron Canada Limited (type certificate previously held by Bell Helicopter Textron Canada Limited) (Bell) Model 505 helicopters. This proposed AD was prompted by the discovery of a gap between the transmission restraint assembly aft attachment hardware lower washer and mating airframe truss assembly (truss assembly) clevis lower lug. This proposed AD would require inspecting the transmission restraint aft attachment hardware installation for a gap and corrective action depending on the inspection results. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Mar 22, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-05433, comments due May 6, 2021 (https://www.federalregister.gov/documents/2021/03/22/2021-05433/airworthiness-directives-bell-textron-canada-limited-type-certificate-previously-held-by-bell)

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