# Airworthiness Directives; Construcciones Aeronauticas, S.A. (CASA), Model C-212-DF Airplanes
> **Rule** · Final rule; request for comments. · Published 2009-02-20 · Effective 2009-03-09 · 74 FR 7786
## Document
- **Document number:** E9-3261
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 74 FR 7786
- **Publication date:** 2009-02-20
- **Effective date:** 2009-03-09
- **FAA docket:** Docket No. FAA-2008-1360
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain CASA Model C-212-DF airplanes. This AD requires a one-time conductivity inspection to determine the material used in manufacturing outer to center wing attachment fittings; and one-time inspections to detect cracks on affected fittings, and corrective action if necessary. This AD results from reports of cracks found in outer to center wing attachment fittings. We are issuing this AD to detect and correct cracks on the upper and lower fittings in both outer and center wings, which could result in reduced structural integrity of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2009/02/20/E9-3261/airworthiness-directives-construcciones-aeronauticas-sa-casa-model-c-212-df-airplanes)
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