# Airworthiness Directives; Airbus Model A319, A320, and A321 Airplanes
> **Rule** · Final rule. · Published 2006-06-16 · Effective 2006-07-21 · 71 FR 34817
## Document
- **Document number:** 06-5424
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 71 FR 34817
- **Publication date:** 2006-06-16
- **Effective date:** 2006-07-21
- **FAA docket:** Docket No. FAA-2006-24431
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Airbus Model A319, A320, and A321 airplanes. This AD requires a detailed inspection for cracks and marks on the carbon blades of the ram air turbine (RAT), and replacement of the RAT with a new or serviceable RAT if necessary. This AD results from a report of three chord-wise cracks on the aft side of one carbon blade of a certain RAT. We are issuing this AD to detect and correct cracks and/or marks on the RAT carbon blades, which could result in reduced structural integrity of the carbon blade, and consequent loss of the RAT as a source of hydraulic and electrical power in an emergency.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2006/06/16/06-5424/airworthiness-directives-airbus-model-a319-a320-and-a321-airplanes)
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