# Proposed AD FAA-2017-0682: Robinson Helicopter Company Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-04-12
- Products: Robinson Helicopter
- Product type: Aircraft
- Action: Supplemental notice of proposed rulemaking (SNPRM); reopening of comment period.
- Published: July 28, 2020, 85 FR 45360
- Comments due: March 30, 2018
- Became: [AD 2021-04-12](https://openairdocs.org/ad/2021-04-12)
- Docket: FAA-2017-0682 (https://www.regulations.gov/docket/FAA-2017-0682, where comments are filed)
- FR document: 2020-16188
- Official PDF: https://openairdocs.org/files/sha256/68/f6/68f604c612d6ecd6cb3617ffee2b2d20c11b0b13a433bf61e585ef12356d5037 (from https://www.govinfo.gov/content/pkg/FR-2020-07-28/pdf/2020-16188.pdf)
- Federal Register: https://www.federalregister.gov/documents/2020/07/28/2020-16188/airworthiness-directives-robinson-helicopter-company-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E201D92336A89273862585B300479FF6.0001
- Page: https://openairdocs.org/proposed/FAA-2017-0682

## Summary

The FAA is revising an earlier proposal for Robinson Helicopter Company (Robinson) Model R66 helicopters that proposed to require replacing a certain part-numbered tail rotor (T/R) drive shaft yoke assembly (yoke assembly) and inspecting for sealant. The NPRM was prompted by reports of T/R drive shaft forward hanger bearing failures. This action revises the NPRM by expanding the applicability, changing the proposed requirements, and correcting nomenclature. Since this imposes an additional burden over that proposed in the NPRM, the FAA is reopening the comment period to allow the public the chance to comment on these changes. The comment period for the NPRM published in the Federal Register on March 30, 2018 (83 FR 13706), is reopened.

## Notices in this docket

- Mar 30, 2018: Notice of proposed rulemaking (NPRM). (first notice), FR document 2018-06449, comments due May 29, 2018 (https://www.federalregister.gov/documents/2018/03/30/2018-06449/airworthiness-directives-robinson-helicopter-company-helicopters)
- Jul 28, 2020: Supplemental notice of proposed rulemaking (SNPRM); reopening of comment period., FR document 2020-16188, comments due Mar 30, 2018 (https://www.federalregister.gov/documents/2020/07/28/2020-16188/airworthiness-directives-robinson-helicopter-company-helicopters)

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