# Proposed AD FAA-2023-1637: Rolls-Royce Deutschland Ltd & Co KG Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2023-22-04
- Products: Rolls-Royce Deutschland
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 31, 2023, 88 FR 49361
- Comments due: September 14, 2023
- Became: [AD 2023-22-04](https://openairdocs.org/ad/2023-22-04)
- Docket: FAA-2023-1637 (https://www.regulations.gov/docket/FAA-2023-1637, where comments are filed)
- Project: MCAI-2023-00184-E
- FR document: 2023-15910
- Official PDF: https://openairdocs.org/files/sha256/18/09/1809c861aba6aa4ae949674c83500592050ba6d4f03154bc86596ebe154494f6 (from https://www.govinfo.gov/content/pkg/FR-2023-07-31/pdf/2023-15910.pdf)
- Federal Register: https://www.federalregister.gov/documents/2023/07/31/2023-15910/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2023-15910-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2023-1637

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Rolls-Royce Deutschland Ltd & Co KG (RRD) Model Trent 1000-A2, Trent 1000-AE2, Trent 1000-C2, Trent 1000-CE2, Trent 1000-D2, Trent 1000-E2, Trent 1000-G2, Trent 1000-H2, Trent 1000-J2, Trent 1000-K2, and Trent 1000-L2 engines. This proposed AD was prompted by reports of cracking and separation of certain low-pressure turbine (LPT) stage 1 blade assemblies. This proposed AD would require initial and repetitive inspections of affected LPT stage 1 blade assemblies for cracking or separation and, depending on the results of the inspections, reduction of the inspection interval or replacement of the LPT stage 1 blade set and disk, 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 31, 2023: Notice of proposed rulemaking (NPRM). (first notice), FR document 2023-15910, comments due Sep 14, 2023 (https://www.federalregister.gov/documents/2023/07/31/2023-15910/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-engines)

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