# Proposed AD FAA-2020-1025: Rolls-Royce Deutschland Ltd. & Co KG (Type Certificate Previously Held by BMW Rolls-Royce GmbH and BMW Rolls-Royce Aero Engines) Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-14-03
- Products: Rolls-Royce Deutschland
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 13, 2020, 85 FR 72608
- Comments due: December 28, 2020
- Became: [AD 2021-14-03](https://openairdocs.org/ad/2021-14-03)
- Docket: FAA-2020-1025 (https://www.regulations.gov/docket/FAA-2020-1025, where comments are filed)
- Project: MCAI-2020-00757-E
- FR document: 2020-25014
- Official PDF: https://openairdocs.org/files/sha256/90/9a/909afe739e21f75ac3bd1ec17bea8b7fc2c0b28b93e8a725682c2b9263cc778a (from https://www.govinfo.gov/content/pkg/FR-2020-11-13/pdf/2020-25014.pdf)
- Federal Register: https://www.federalregister.gov/documents/2020/11/13/2020-25014/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-type-certificate-previously-held-by
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EA676F8DB693BBA08625861F004E9F43.0001
- Page: https://openairdocs.org/proposed/FAA-2020-1025

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Rolls-Royce Deutschland Ltd. & Co KG (RRD) BR700-715A1-30, BR700-715B1-30, and BR700-715C1-30 model turbofan engines. This proposed AD was prompted by reports of HPT stage 1 blades failing in service due to sulphidation and subsequent crack initiation. This proposed AD would require removal and replacement of the HPT stage 1 blade and HPT stage 1 blade damper. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Nov 13, 2020: Notice of proposed rulemaking (NPRM). (first notice), FR document 2020-25014, comments due Dec 28, 2020 (https://www.federalregister.gov/documents/2020/11/13/2020-25014/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-type-certificate-previously-held-by)

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