# Airworthiness Directives; Rolls-Royce plc Turbofan Engines
> **Rule** · Final rule; request for comments. · Published 2017-05-25 · Effective 2017-06-09 · 82 FR 24033
## Document
- **Document number:** 2017-10438
- **Category:** airworthiness
- **Manufacturer:** Rolls-Royce plc Turbofan
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 82 FR 24033
- **Publication date:** 2017-05-25
- **Effective date:** 2017-06-09
- **FAA docket:** Docket No. FAA-2017-0114
## Abstract

We are adopting a new airworthiness directive (AD) for certain Rolls-Royce plc (RR) RB211 Trent 768-60, 772-60, and 772B-60 turbofan engines. This AD requires fluorescent penetrant inspection (FPI) of the compressor intermediate case (CIC) for cracking. This AD was prompted by CICs that were weld repaired and have a higher probability of cracking as a result of the weld repair process. We are issuing this AD to correct the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/05/25/2017-10438/airworthiness-directives-rolls-royce-plc-turbofan-engines)
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