# Proposed AD 97-NM-297-AD: Construcciones Aeronauticas, S.A. (CASA) Model C-212 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 98-10-08
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 10, 1998, 63 FR 11631
- Comments due: April 9, 1998
- Became: [AD 98-10-08](https://openairdocs.org/ad/98-10-08)
- Docket: 97-NM-297-AD
- FR document: 98-6020
- Official PDF: https://openairdocs.org/files/sha256/b4/4d/b44dc520d85c931d9dd3876d703767721f2403fda07779421c439b4a92006128 (from https://www.govinfo.gov/content/pkg/FR-1998-03-10/pdf/98-6020.pdf)
- Federal Register: https://www.federalregister.gov/documents/1998/03/10/98-6020/airworthiness-directives-construcciones-aeronauticas-sa-casa-model-c-212-series-airplanes
- Page: https://openairdocs.org/proposed/97-NM-297-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain CASA Model C-212 series airplanes. This proposal would require a one-time inspection of the lower shaft and support structure of the rudder for corrosion, repair of any discrepancy found, and modification of the structure. 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 corrosion from developing in the lower shaft and support structure of the rudder, which could result in the failure of the rudder lower shaft and consequent reduced controllability of the airplane.

## Notices in this docket

- Mar 10, 1998: Notice of proposed rulemaking (NPRM). (first notice), FR document 98-6020, comments due Apr 9, 1998 (https://www.federalregister.gov/documents/1998/03/10/98-6020/airworthiness-directives-construcciones-aeronauticas-sa-casa-model-c-212-series-airplanes)

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