# Proposed AD FAA-2021-0092: Airbus Helicopters (Type Certificate Previously Held by Eurocopter France) Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-09-14
- Products: Airbus Helicopters
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 26, 2021, 86 FR 11657
- Comments due: April 12, 2021
- Became: [AD 2021-09-14](https://openairdocs.org/ad/2021-09-14)
- Docket: FAA-2021-0092 (https://www.regulations.gov/docket/FAA-2021-0092, where comments are filed)
- Project: MCAI-2020-01501-R
- FR document: 2021-03665
- Official PDF: https://openairdocs.org/files/sha256/7c/6b/7c6b85902a0b103e4a0072b0b51410020d3eb4d9d682caeb4fda1367770d9488 (from https://www.govinfo.gov/content/pkg/FR-2021-02-26/pdf/2021-03665.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/02/26/2021-03665/airworthiness-directives-airbus-helicopters-type-certificate-previously-held-by-eurocopter-france
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0AF9670E291F2F568625868800686394.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0092

## Summary

The FAA proposes to supersede Airworthiness Directive (AD) 2010-16-51, which applies to certain Eurocopter France (now Airbus Helicopters (Airbus)) Model SA330J helicopters. AD 2010-16-51 requires inspecting for a gap between the main gearbox (MGB) oil cooling fan assembly (fan) rotor blade and the upper section of the guide vane bearing housing and depending on the results, replacing the two fan rotor shaft bearings with two airworthy bearings. Since the FAA issued AD 2010-16-51, Airbus has developed an improved MGB fan rotor shaft bearing design. This proposed AD would retain the inspection required by AD 2010-16-51, and propose installing improved MGB fan rotor shaft bearings and repetitively inspecting the new improved MGB fan rotor shaft bearings, as specified in a European Union Aviation Safety Agency (EASA) AD, which is proposed for incorporation by reference (IBR). The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Feb 26, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-03665, comments due Apr 12, 2021 (https://www.federalregister.gov/documents/2021/02/26/2021-03665/airworthiness-directives-airbus-helicopters-type-certificate-previously-held-by-eurocopter-france)

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