# Proposed AD FAA-2023-1397: Safran Helicopter Engines, S.A. (Type Certificate Previously Held by Turbomeca S.A.) Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2023-24-09
- Products: Safran Helicopter Engines
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 12, 2023, 88 FR 44232
- Comments due: August 28, 2023
- Became: [AD 2023-24-09](https://openairdocs.org/ad/2023-24-09)
- Docket: FAA-2023-1397 (https://www.regulations.gov/docket/FAA-2023-1397, where comments are filed)
- Project: MCAI-2023-00014-E
- FR document: 2023-14469
- Official PDF: https://openairdocs.org/files/sha256/b5/c4/b5c46e24dd6820493fdee606c92a2fdded51f593d9c9ce64cb54fdd82a955415 (from https://www.govinfo.gov/content/pkg/FR-2023-07-12/pdf/2023-14469.pdf)
- Federal Register: https://www.federalregister.gov/documents/2023/07/12/2023-14469/airworthiness-directives-safran-helicopter-engines-sa-type-certificate-previously-held-by-turbomeca
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2023-14469-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2023-1397

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Safran Helicopter Engines, S.A. (Safran) (type certificate previously held by Turbomeca S.A.) Model Arrius 2R engines. This proposed AD was prompted by reports of inconsistencies between the torque (TQ) and measured gas temperature (MGT) conformation values recorded in the avionics and the TQ and MGT conformation values recorded on the engine log cards following replacement of the M01 and M02 modules installed on the engine. This proposed AD would require a one-time check of the consistency between the TQ and MGT conformation values recorded in the avionics and the values recorded on the engine log cards, and, if necessary, recalibrating the values and updating the engine logs, 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

- Jul 12, 2023: Notice of proposed rulemaking (NPRM). (first notice), FR document 2023-14469, comments due Aug 28, 2023 (https://www.federalregister.gov/documents/2023/07/12/2023-14469/airworthiness-directives-safran-helicopter-engines-sa-type-certificate-previously-held-by-turbomeca)

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