# Proposed AD 97-CE-84-AD: HOAC Austria Model DV-20 Katana Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 98-04-02
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 7, 1997, 62 FR 60183
- Comments due: December 8, 1997
- Became: [AD 98-04-02](https://openairdocs.org/ad/98-04-02)
- Docket: 97-CE-84-AD
- FR document: 97-29408
- Official PDF: https://openairdocs.org/files/sha256/43/14/43147b40ac54051617bd0c580594b5236dcdb2a2d558f941a3a3df1beba419b6 (from https://www.govinfo.gov/content/pkg/FR-1997-11-07/pdf/97-29408.pdf)
- Federal Register: https://www.federalregister.gov/documents/1997/11/07/97-29408/airworthiness-directives-hoac-austria-model-dv-20-katana-airplanes
- Page: https://openairdocs.org/proposed/97-CE-84-AD

## Summary

This document proposes to adopt a new airworthiness directive (AD) that would apply to certain HOAC Austria Model DV-20 Katana airplanes. The proposed AD would require replacing the nose wheel leg of the nose landing gear (NLG) with a part of improved design. The proposed AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Austria. The actions specified by the proposed AD are intended to prevent NLG collapse caused by cracks in the welding of the nose wheel tappet of the NLG, which could result in the inability to control the airplane during landing, takeoff, and other ground operations.

## Notices in this docket

- Nov 7, 1997: Notice of proposed rulemaking (NPRM). (first notice), FR document 97-29408, comments due Dec 8, 1997 (https://www.federalregister.gov/documents/1997/11/07/97-29408/airworthiness-directives-hoac-austria-model-dv-20-katana-airplanes)

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