# Airworthiness Directives; Construcciones Aeronauticas, S.A. (CASA) Model CN-235 Series Airplanes
> **Rule** · Final rule. · Published 1998-06-03 · Effective 1998-07-08 · 63 FR 30112
## Document
- **Document number:** 98-14213
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 63 FR 30112
- **Publication date:** 1998-06-03
- **Effective date:** 1998-07-08
- **FAA docket:** Docket No. 97-NM-43-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain CASA Model CN-235 series airplanes, that requires modification of certain fastener holes of the center wing. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent fatigue cracking in this area, which could result in reduced structural integrity of the wing.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/06/03/98-14213/airworthiness-directives-construcciones-aeronauticas-sa-casa-model-cn-235-series-airplanes)
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