# Proposed AD FAA-2022-1158: Rolls-Royce Deutschland Ltd & Co KG (Type Certificate Previously Held by Rolls-Royce plc) Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-24-06
- Products: Rolls-Royce Deutschland
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 14, 2022, 87 FR 56284
- Comments due: October 31, 2022
- Became: [AD 2022-24-06](https://openairdocs.org/ad/2022-24-06)
- Docket: FAA-2022-1158 (https://www.regulations.gov/docket/FAA-2022-1158, where comments are filed)
- Project: MCAI-2022-00771-E
- FR document: 2022-19596
- Official PDF: https://openairdocs.org/files/sha256/b8/f1/b8f1cb675a72c3ff341d3df5c704982d675044d4a9e62dd4727f63b193975ac4 (from https://www.govinfo.gov/content/pkg/FR-2022-09-14/pdf/2022-19596.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/09/14/2022-19596/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-type-certificate-previously-held-by
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2022-19596-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2022-1158

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Rolls-Royce Deutschland Ltd & Co KG (RRD) BR700-710A1-10, BR700-710A2-20, and BR700-710C4-11 model turbofan engines. This proposed AD was prompted by reports of cracks on certain low-pressure compressor (LPC) rotor (fan) disks. This proposed AD would require initial and repetitive visual inspections of certain LPC rotor fan disks and, depending on the results of the inspections, replacement of any LPC rotor fan disk with cracks detected. This proposed AD would also allow modification of the engine in accordance with RRD service information as a terminating action to these inspections, 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

- Sep 14, 2022: Notice of proposed rulemaking (NPRM). (first notice), FR document 2022-19596, comments due Oct 31, 2022 (https://www.federalregister.gov/documents/2022/09/14/2022-19596/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-type-certificate-previously-held-by)

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