# Proposed AD FAA-2021-0460: Airbus Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-20-06
- Products: Airbus Helicopters
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 11, 2021, 86 FR 31194
- Comments due: July 26, 2021
- Became: [AD 2021-20-06](https://openairdocs.org/ad/2021-20-06)
- Docket: FAA-2021-0460 (https://www.regulations.gov/docket/FAA-2021-0460, where comments are filed)
- Project: MCAI-2020-01620-R
- FR document: 2021-12226
- Official PDF: https://openairdocs.org/files/sha256/85/96/859686c756f229603f5d123502fb9f5b05583a9f966261db6d5885b6be283fbe (from https://www.govinfo.gov/content/pkg/FR-2021-06-11/pdf/2021-12226.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/06/11/2021-12226/airworthiness-directives-airbus-helicopters
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8B679079DE4BA0B4862586F100645101.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0460

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus Helicopters Model AS355E, AS355F, AS355F1, and AS355F2 helicopters. This proposed AD was prompted by multiple fatigue cracks in power turbine (PT) 3rd stage wheels. This proposed AD would require revising the existing Rotorcraft Flight Manual (RFM) for your helicopter and installing a placard. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jun 11, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-12226, comments due Jul 26, 2021 (https://www.federalregister.gov/documents/2021/06/11/2021-12226/airworthiness-directives-airbus-helicopters)

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