# Proposed AD 97-NM-43-AD: Construcciones Aeronauticas, S.A. (CASA) Model CN-235 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 98-11-23
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 23, 1998, 63 FR 13801
- Comments due: April 22, 1998
- Became: [AD 98-11-23](https://openairdocs.org/ad/98-11-23)
- Docket: 97-NM-43-AD
- FR document: 98-7366
- Official PDF: https://openairdocs.org/files/sha256/e8/ec/e8ec3cb688e90d2c48222029d30f85990cd7adb6333a9a3d11331c7b6fb5ccf5 (from https://www.govinfo.gov/content/pkg/FR-1998-03-23/pdf/98-7366.pdf)
- Federal Register: https://www.federalregister.gov/documents/1998/03/23/98-7366/airworthiness-directives-construcciones-aeronauticas-sa-casa-model-cn-235-series-airplanes
- Page: https://openairdocs.org/proposed/97-NM-43-AD

## Summary

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

## Notices in this docket

- Mar 23, 1998: Notice of proposed rulemaking (NPRM). (first notice), FR document 98-7366, comments due Apr 22, 1998 (https://www.federalregister.gov/documents/1998/03/23/98-7366/airworthiness-directives-construcciones-aeronauticas-sa-casa-model-cn-235-series-airplanes)

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