# Airworthiness Directives; Rolls-Royce, Deutschland Ltd. & Co. KG (Formerly Rolls-Royce plc) Turbofan Engines
> **Rule** · Final rule. · Published 2020-03-31 · Effective 2020-05-05 · 85 FR 17738
## Document
- **Document number:** 2020-06640
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 85 FR 17738
- **Publication date:** 2020-03-31
- **Effective date:** 2020-05-05
- **FAA docket:** Docket No. FAA-2018-0538
## Abstract

The FAA is superseding Airworthiness Directive (AD) AD 2017- 03-02 for certain Rolls-Royce, Deutschland Ltd. & Co. KG RB211 Trent 768-60, 772-60, and 772B-60 model turbofan engines. AD 2017-03-02 required initial and repetitive ultrasonic inspections (UIs) of the affected low-pressure (LP) compressor blades. This AD requires initial and repetitive UIs of the affected LP compressor blades and, depending on the results of the UIs, their replacement with a part eligible for installation. This AD was prompted by LP compressor blade partial airfoil release events. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/03/31/2020-06640/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-formerly-rolls-royce-plc-turbofan)
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