# Proposed AD FAA-2021-0662: 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 2022-04-02
- Products: Rolls-Royce Deutschland
- Product type: Engine
- Action: Supplemental notice of proposed rulemaking (SNPRM).
- Published: November 5, 2021, 86 FR 61083
- Comments due: December 20, 2021
- Became: [AD 2022-04-02](https://openairdocs.org/ad/2022-04-02)
- Docket: FAA-2021-0662 (https://www.regulations.gov/docket/FAA-2021-0662, where comments are filed)
- Project: MCAI-2021-00031-E
- FR document: 2021-24056
- Official PDF: https://openairdocs.org/files/sha256/4a/37/4a37591c439d3076059f26cf5134349d6bc8e679cafbb98d53d990dc83e2ce03 (from https://www.govinfo.gov/content/pkg/FR-2021-11-05/pdf/2021-24056.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/11/05/2021-24056/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-type-certificate-previously-held-by
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2021-24056-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0662

## Summary

The FAA is revising a notice of proposed rulemaking (NPRM) that applied to certain Rolls-Royce Deutschland Ltd & Co KG (RRD) Trent 1000 model turbofan engines. This action revises the NPRM by reopening the comment period because the NPRM was placed in incorrect Docket No. FAA-2021-0637 instead of Docket No. FAA-2021-0662. The FAA is proposing this airworthiness directive (AD) to address the unsafe condition on these products. Since commenters experienced difficulties in commenting on the NPRM, the FAA is requesting comments on this SNPRM.

## Notices in this docket

- Aug 13, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-17071, comments due Sep 27, 2021 (https://www.federalregister.gov/documents/2021/08/13/2021-17071/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-type-certificate-previously-held-by)
- Nov 5, 2021: Supplemental notice of proposed rulemaking (SNPRM)., FR document 2021-24056, comments due Dec 20, 2021 (https://www.federalregister.gov/documents/2021/11/05/2021-24056/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-type-certificate-previously-held-by)

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