# Proposed AD FAA-2020-1131: Airbus Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-05-02
- Products: Airbus Helicopters
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 15, 2020, 85 FR 81157
- Comments due: January 29, 2021
- Became: [AD 2021-05-02](https://openairdocs.org/ad/2021-05-02)
- Docket: FAA-2020-1131 (https://www.regulations.gov/docket/FAA-2020-1131, where comments are filed)
- Project: MCAI-2020-00613-R
- FR document: 2020-27460
- Official PDF: https://openairdocs.org/files/sha256/b1/87/b187c504fe2a13ae9db0f3fa45b8f05e9e523d5b88814ffb12c4abe58585767e (from https://www.govinfo.gov/content/pkg/FR-2020-12-15/pdf/2020-27460.pdf)
- Federal Register: https://www.federalregister.gov/documents/2020/12/15/2020-27460/airworthiness-directives-airbus-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1A89A56D7BB25A7C8625863F0058C06D.0001
- Page: https://openairdocs.org/proposed/FAA-2020-1131

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Helicopters Model AS350B, AS350BA, AS350B1, AS350B2, AS350B3, AS350C, and AS350D helicopters; Model AS355E, AS355F, AS355F1, AS355F2, AS355N, and AS355NP helicopters; and Model EC130B4 and EC130T2 helicopters. This proposed AD was prompted by a report of failed main rotor hub-to-mast attachment screws. This proposed AD would require determining whether the helicopter has been operated in a severe environment since the last inspection of the main rotor hub-to-mast attachment screws, an inspection of the main rotor hub-to-mast attachment screws if the helicopter has been operated in a severe environment, and replacement of the main rotor hub-to-mast attachment screws if necessary, as specified in a European Aviation Safety Agency (now European Union Aviation Safety Agency) (EASA) AD, which will be incorporated by reference. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Dec 15, 2020: Notice of proposed rulemaking (NPRM). (first notice), FR document 2020-27460, comments due Jan 29, 2021 (https://www.federalregister.gov/documents/2020/12/15/2020-27460/airworthiness-directives-airbus-helicopters)

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