# Airworthiness Directives; Rolls-Royce plc Turbojet Engines
> **Rule** · Final rule; request for comments. · Published 2018-05-09 · Effective 2018-05-24 · 83 FR 21169
## Document
- **Document number:** 2018-09913
- **Category:** airworthiness
- **Manufacturer:** Rolls-Royce plc Turbojet
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 83 FR 21169
- **Publication date:** 2018-05-09
- **Effective date:** 2018-05-24
- **FAA docket:** Docket No. FAA-2018-0287
## Abstract

We are adopting a new airworthiness directive (AD) for Rolls- Royce plc (RR) Viper Mk. 601-22 turbojet engines. This AD requires removing the oil pump assembly, part number (P/N) V112027, and oil pressure filter, P/N V21264, from service and replacing them with parts eligible for installation. This AD was prompted by a report of an engine failure caused by installation of an incorrect oil filter. We are issuing this AD to correct the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/05/09/2018-09913/airworthiness-directives-rolls-royce-plc-turbojet-engines)
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