# Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG (Type Certificate Previously Held by Rolls-Royce plc) Turbofan Engines
> **Rule** · Final rule. · Published 2021-07-12 · Effective 2021-08-16 · 86 FR 36487
## Document
- **Document number:** 2021-14701
- **Category:** airworthiness
- **Manufacturer:** Rolls-Royce Deutschland Ltd & Co KG (Type Certificate Previously Held by Rolls-Royce plc) Turbofan
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 86 FR 36487
- **Publication date:** 2021-07-12
- **Effective date:** 2021-08-16
- **FAA docket:** Docket No. FAA-2021-0022
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all Rolls-Royce Deutschland Ltd & Co KG (RRD) Trent XWB-75, Trent XWB-79, Trent XWB-79B, Trent XWB-84, and Trent XWB-97 model turbofan engines. This AD was prompted by the manufacturer revising the time limits manual (TLM) to incorporate repairs to the low-pressure compressor (LPC) blades and introduce a new fan blade inspection. This AD requires revisions to the airworthiness limitations section (ALS) of the Rolls- Royce (RR) Trent XWB TLM and the operator's existing approved aircraft maintenance program (AMP). The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/07/12/2021-14701/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-type-certificate-previously-held-by)
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