# Airworthiness Directives; Rolls-Royce Deutschland Ltd. & Co. KG. (RRD) Tay 650-15 Turbofan Engines
> **Rule** · Final rule; request for comments. · Published 2009-10-27 · Effective 2009-11-12 · 74 FR 55121
## Document
- **Document number:** E9-25031
- **Category:** airworthiness
- **Manufacturer:** Rolls-Royce Deutschland Ltd. & Co. KG. (RRD) Tay 650-15 Turbofan
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 74 FR 55121
- **Publication date:** 2009-10-27
- **Effective date:** 2009-11-12
- **FAA docket:** Docket No. FAA-2007-0037
## Abstract

We are superseding an existing airworthiness directive (AD) for the products listed above. That AD currently requires initial and repetitive inspections of the low-pressure (LP) turbine discs stage 2 and stage 3 for corrosion, on certain serial number engines. This AD requires the same actions, but extends the applicability to additional engine serial numbers. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2009/10/27/E9-25031/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-rrd-tay-650-15-turbofan-engines)
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