# Proposed AD FAA-2023-1490: Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2023-21-08
- Products: Rolls-Royce Deutschland
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 14, 2023, 88 FR 45106
- Comments due: August 28, 2023
- Became: [AD 2023-21-08](https://openairdocs.org/ad/2023-21-08)
- Docket: FAA-2023-1490 (https://www.regulations.gov/docket/FAA-2023-1490, where comments are filed)
- Project: MCAI-2022-01624-E
- FR document: 2023-14837
- Official PDF: https://openairdocs.org/files/sha256/b7/2f/b72f733038d58f05cb3e980529bccd610c3ac24022aeb74f2169eb0e183a638e (from https://www.govinfo.gov/content/pkg/FR-2023-07-14/pdf/2023-14837.pdf)
- Federal Register: https://www.federalregister.gov/documents/2023/07/14/2023-14837/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2023-14837-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2023-1490

## Summary

The FAA proposes to supersede Airworthiness Directive (AD) 2021-21-13, which applies to certain Rolls-Royce Deutschland Ltd. & Co KG (RRD) Model Trent 1000 engines. AD 2021-21-13 requires the operator to revise the airworthiness limitation section (ALS) of their existing approved aircraft maintenance program (AMP) by incorporating the revised tasks of the applicable time limits manual (TLM) for each affected model turbofan engine. Since the FAA issued AD 2021-21-13, the manufacturer has revised the TLM, introducing new and more restrictive instructions. This proposed AD would require revisions to the ALS of the operator's existing approved AMP, 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 14, 2023: Notice of proposed rulemaking (NPRM). (first notice), FR document 2023-14837, comments due Aug 28, 2023 (https://www.federalregister.gov/documents/2023/07/14/2023-14837/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-turbofan-engines)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.