# Proposed AD FAA-2023-1212: Rolls-Royce Deutschland Ltd. & Co. KG Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2023-17-12
- Products: Rolls-Royce Deutschland
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 14, 2023, 88 FR 38759
- Comments due: July 31, 2023
- Became: [AD 2023-17-12](https://openairdocs.org/ad/2023-17-12)
- Docket: FAA-2023-1212 (https://www.regulations.gov/docket/FAA-2023-1212, where comments are filed)
- Project: MCAI-2022-00423-E
- FR document: 2023-12698
- Official PDF: https://openairdocs.org/files/sha256/fa/8a/fa8a817f0d9ff65eea9fcae506bf5ac0669f0d1f2ceb8a1fad9f7e7a49daf52b (from https://www.govinfo.gov/content/pkg/FR-2023-06-14/pdf/2023-12698.pdf)
- Federal Register: https://www.federalregister.gov/documents/2023/06/14/2023-12698/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2023-12698-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2023-1212

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Rolls-Royce Deutschland Ltd. & Co. KG (RRD) Model RB211 Trent 768-60, 772-60, and 772B-60 engines. This proposed AD was prompted by reports of cracks on affected intermediate-pressure compressor (IPC) rotor shaft balance lands. This proposed AD would require repetitive on-wing or in-shop borescope inspections (BSIs) of the affected IPC rotor shaft balance land for cracks, replacement of any IPC rotor shaft if necessary, and would prohibit the installation of an affected IPC rotor shaft on any engine, 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

- Jun 14, 2023: Notice of proposed rulemaking (NPRM). (first notice), FR document 2023-12698, comments due Jul 31, 2023 (https://www.federalregister.gov/documents/2023/06/14/2023-12698/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-engines)

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