# Airworthiness Directives; Teledyne Continental Motors O-470, IO-470, TSIO-470, IO-520, TSIO-520, IO-550, and IOF-550 Series Reciprocating Engines; Correction
> **Rule** · Final rule; correction. · Published 2009-10-07 · Effective 2009-10-07 · 74 FR 51464
## Document
- **Document number:** E9-24088
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule; correction.
- **Citation:** 74 FR 51464
- **Publication date:** 2009-10-07
- **Effective date:** 2009-10-07
- **FAA docket:** Docket No. FAA-2009-0367
## Abstract

The FAA is correcting airworthiness directive (AD) 2009-19-06, which published in the Federal Register on September 22, 2009. That AD applies to Teledyne Continental Motors O-470, IO-470, TSIO-470, IO-520, TSIO-520, IO-550, and IOF-550 series reciprocating engines. The two references to the AD number are incorrect due to a software problem with the automated AD number assignment system. This document corrects those references. In all other respects, the original document remains the same.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2009/10/07/E9-24088/airworthiness-directives-teledyne-continental-motors-o-470-io-470-tsio-470-io-520-tsio-520-io-550)
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