# Proposed AD FAA-2021-0498: Helicopteres Guimbal Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-19-04
- Products: Helicopteres Guimbal
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 9, 2021, 86 FR 36241
- Comments due: August 23, 2021
- Became: [AD 2021-19-04](https://openairdocs.org/ad/2021-19-04)
- Docket: FAA-2021-0498 (https://www.regulations.gov/docket/FAA-2021-0498, where comments are filed)
- Project: 2019-SW-072-AD
- FR document: 2021-14495
- Official PDF: https://openairdocs.org/files/sha256/73/b2/73b2626a6accb7b1fbe87c511ebc0a20ec0b44b479afecb852276fd3b88ca42a (from https://www.govinfo.gov/content/pkg/FR-2021-07-09/pdf/2021-14495.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/07/09/2021-14495/airworthiness-directives-hlicoptres-guimbal-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7C4F274823E14F868625870D0075FA0D.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0498

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for Helicopteres Guimbal Model Cabri G2 helicopters with any metal bushing installed on the main rotor (M/R) swashplate guide bellcrank. This proposed AD was prompted by a report of cracks discovered on the M/R scissor link during scheduled maintenance on several helicopters. This proposed AD would require removing all metal bushings from service, visually inspecting the lug bore area and depending on the inspection results, removing certain parts from service and installing certain part-numbered plastic bushings. This proposed AD would also prohibit installing any metal bushing on any helicopter. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jul 9, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-14495, comments due Aug 23, 2021 (https://www.federalregister.gov/documents/2021/07/09/2021-14495/airworthiness-directives-hlicoptres-guimbal-helicopters)

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