# Proposed AD FAA-2021-0100: Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca, S.A.) Turboshaft Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-13-08
- Products: Safran Helicopter Engines
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 26, 2021, 86 FR 11662
- Comments due: April 12, 2021
- Became: [AD 2021-13-08](https://openairdocs.org/ad/2021-13-08)
- Docket: FAA-2021-0100 (https://www.regulations.gov/docket/FAA-2021-0100, where comments are filed)
- Project: MCAI-2020-00309-E
- FR document: 2021-03777
- Official PDF: https://openairdocs.org/files/sha256/9b/e5/9be547c5559450f168602ca268aac745c585cbdb1fc425c0c99af560017817f8 (from https://www.govinfo.gov/content/pkg/FR-2021-02-26/pdf/2021-03777.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/02/26/2021-03777/airworthiness-directives-safran-helicopter-engines-sa-type-certificate-previously-held-by-turbomeca
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4569DE015B2C451F86258688006863F4.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0100

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Safran Helicopter Engines, S.A. Arriel 2C and Arriel 2S1 model turboshaft engines. This proposed AD was prompted by reports of error messages on the full authority digital engine control (FADEC) B digital engine control unit (DECU), caused by blistering of the varnish on the DECU circuit board. This proposed AD would require the replacement of certain FADEC B DECUs. 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 2021-03777, comments due Apr 12, 2021 (https://www.federalregister.gov/documents/2021/02/26/2021-03777/airworthiness-directives-safran-helicopter-engines-sa-type-certificate-previously-held-by-turbomeca)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.