# Proposed AD FAA-2023-1410: Rolls-Royce Deutschland Ltd & Co KG Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2023-21-03
- Products: Rolls-Royce Deutschland
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 11, 2023, 88 FR 44075
- Comments due: August 25, 2023
- Became: [AD 2023-21-03](https://openairdocs.org/ad/2023-21-03)
- Docket: FAA-2023-1410 (https://www.regulations.gov/docket/FAA-2023-1410, where comments are filed)
- Project: MCAI-2022-01517-E
- FR document: 2023-14587
- Official PDF: https://openairdocs.org/files/sha256/2c/f7/2cf746bff679cd27bee40aca406bc791a5d4a113c7be3197e1b70140045b7927 (from https://www.govinfo.gov/content/pkg/FR-2023-07-11/pdf/2023-14587.pdf)
- Federal Register: https://www.federalregister.gov/documents/2023/07/11/2023-14587/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2023-14587-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2023-1410

## Summary

The FAA proposes to supersede Airworthiness Directive (AD) 2013-26-10, which applies to certain Rolls-Royce Deutschland Ltd & Co KG (RRD) Model RB211-524G2-19, RB211-524G3-19, RB211-524H-36, and RB211-524H2-19 engines. AD 2013-26-10 requires a one-time reduction in the cyclic life of certain high-pressure compressor (HPC) rotor stage 1 and stage 2 disks, and removal of disks that exceed the reduced cycle life. Since the FAA issued AD 2013-26-10, the manufacturer has revised the engine time limits manual (TLM), introducing new and more restrictive instructions. This proposed AD would require revisions to the airworthiness limitations section (ALS) of the operator's existing approved engine maintenance or inspection program, as applicable, 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 11, 2023: Notice of proposed rulemaking (NPRM). (first notice), FR document 2023-14587, comments due Aug 25, 2023 (https://www.federalregister.gov/documents/2023/07/11/2023-14587/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-engines)

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