# Airworthiness Directives; Construcciones Aeronauticas, S.A. (CASA) Model C-212 Series Airplanes
> **Rule** · Final rule. · Published 1998-03-11 · Effective 1998-04-15 · 63 FR 11820
## Document
- **Document number:** 98-6021
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 63 FR 11820
- **Publication date:** 1998-03-11
- **Effective date:** 1998-04-15
- **FAA docket:** Docket No. 97-NM-277-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain CASA Model C-212 series airplanes, that requires a one-time inspection to detect discrepancies of the spherical bearing of the aileron control rod, and corrective action, if necessary; and installation of an improved retainer washer in the movable joint of the aileron control rod. 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 loss of the movable joint of the aileron control rod, caused by deterioration of the hinges, which could result in reduced controllability of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/03/11/98-6021/airworthiness-directives-construcciones-aeronauticas-sa-casa-model-c-212-series-airplanes)
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