# Proposed AD FAA-2024-0036: Rolls-Royce Deutschland Ltd & Co KG Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2024-08-06
- Products: Rolls-Royce Deutschland
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: January 24, 2024, 89 FR 4582
- Comments due: March 11, 2024
- Became: [AD 2024-08-06](https://openairdocs.org/ad/2024-08-06)
- Docket: FAA-2024-0036 (https://www.regulations.gov/docket/FAA-2024-0036, where comments are filed)
- Project: MCAI-2023-00731-E
- FR document: 2024-01248
- Official PDF: https://openairdocs.org/files/sha256/96/0b/960bb6b0ae9747ac37e632b21e8f096ab77ef991a052c2300133b41fec2883ad (from https://www.govinfo.gov/content/pkg/FR-2024-01-24/pdf/2024-01248.pdf)
- Federal Register: https://www.federalregister.gov/documents/2024/01/24/2024-01248/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2024-01248-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2024-0036

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Rolls-Royce Deutschland Ltd & Co KG (RRD) Model Trent 1000-A, Trent 1000-A2, Trent 1000-AE, Trent 1000-AE2, Trent 1000-C, Trent 1000- C2, Trent 1000-CE, Trent 1000-CE2, Trent 1000-D, Trent 1000-D2, Trent 1000-E, Trent 1000-E2, Trent 1000-G, Trent 1000-G2, Trent 1000-H, Trent 1000-H2, Trent 1000-J2, Trent 1000-K2, and Trent 1000-L2 engines. This proposed AD was prompted by reports of wear in the combining spill valve (CSV) assembly of certain hydro-mechanical units (HMUs). This proposed AD would require removing certain HMUs from service and replacing with a serviceable part. This proposed AD would also prohibit installation of certain HMUs unless the HMU is a serviceable part or the CSV assembly has been replaced, as specified in a European Union Aviation Safety Agency (EASA) AD, which is proposed for incorporation by reference. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jan 24, 2024: Notice of proposed rulemaking (NPRM). (first notice), FR document 2024-01248, comments due Mar 11, 2024 (https://www.federalregister.gov/documents/2024/01/24/2024-01248/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-engines)

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