# Proposed AD FAA-2019-1109: 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 2020-12-01
- Products: Rolls-Royce Deutschland
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 12, 2020, 85 FR 7899
- Comments due: March 30, 2020
- Became: [AD 2020-12-01](https://openairdocs.org/ad/2020-12-01)
- Docket: FAA-2019-1109 (https://www.regulations.gov/docket/FAA-2019-1109, where comments are filed)
- FR document: 2020-02724
- Official PDF: https://openairdocs.org/files/sha256/93/bb/93bb94d3be83a740e7cd81c718895d73d584a1fdeba44c40f45c84b7eee32483 (from https://www.govinfo.gov/content/pkg/FR-2020-02-12/pdf/2020-02724.pdf)
- Federal Register: https://www.federalregister.gov/documents/2020/02/12/2020-02724/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-type-certificate-previously-held-by
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C894FACBACF2946F8625850D00555089.0001
- Page: https://openairdocs.org/proposed/FAA-2019-1109

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Rolls-Royce Deutschland Ltd. & Co KG (RRD) Trent XWB-75, XWB-79, XWB-79B, and XWB-84 turbofan engines. This proposed AD was prompted by analysis by the manufacturer of the low-pressure compressor (LPC) outlet guide vane (OGV) assembly and LPC OGV outer mount ring assembly. The analysis predicted that when the front engine mount is in the fail-safe condition, the most highly stressed LPC OGV outer mount ring assembly has a life that could be substantially less than one shop visit interval. This proposed AD would require initial and repetitive inspections of the OGV outer mount ring assembly and, depending on the results of the inspections, possible replacement of the OGV outer mount ring assembly. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Feb 12, 2020: Notice of proposed rulemaking (NPRM). (first notice), FR document 2020-02724, comments due Mar 30, 2020 (https://www.federalregister.gov/documents/2020/02/12/2020-02724/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-type-certificate-previously-held-by)

---
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.