# Proposed AD 95-CE-62-AD: HOAC Austria Model DV-20 Katana Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 96-24-07
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 22, 1996, 61 FR 43317
- Comments due: October 28, 1996
- Became: [AD 96-24-07](https://openairdocs.org/ad/96-24-07)
- Docket: 95-CE-62-AD
- FR document: 96-21374
- Official PDF: https://openairdocs.org/files/sha256/86/44/8644f365e0dcf62303b3fe407ba987dd214b11af392d582e9b3b2d459fc188de (from https://www.govinfo.gov/content/pkg/FR-1996-08-22/pdf/96-21374.pdf)
- Federal Register: https://www.federalregister.gov/documents/1996/08/22/96-21374/airworthiness-directives-hoac-austria-model-dv-20-katana-airplanes
- Page: https://openairdocs.org/proposed/95-CE-62-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 action would require replacing the muffler with one of improved design, installing a heat shield around the exhaust system endpipe, and adjusting the airplane weight and balance. Reports of cracks in the welding joint that connects the exhaust system endpipe to the muffler on three of the affected airplanes prompted the proposed action. The actions specified by the proposed AD are intended to prevent separation of the exhaust system endpipe from the muffler because of cracks in the welding that connects these parts, which could result in heat damage to the electrical system and engine controls.

## Notices in this docket

- Aug 22, 1996: Notice of proposed rulemaking (NPRM). (first notice), FR document 96-21374, comments due Oct 28, 1996 (https://www.federalregister.gov/documents/1996/08/22/96-21374/airworthiness-directives-hoac-austria-model-dv-20-katana-airplanes)

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