# Proposed AD 98-NM-59-AD: Dornier Model 328-100 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 98-21-18
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 30, 1998, 63 FR 15105
- Comments due: April 29, 1998
- Became: [AD 98-21-18](https://openairdocs.org/ad/98-21-18)
- Docket: 98-NM-59-AD
- FR document: 98-8223
- Official PDF: https://openairdocs.org/files/sha256/eb/59/eb599ff641d6cbc2532ccefb2156a51d556affc9445ab72d639ade6b4e8b19a4 (from https://www.govinfo.gov/content/pkg/FR-1998-03-30/pdf/98-8223.pdf)
- Federal Register: https://www.federalregister.gov/documents/1998/03/30/98-8223/airworthiness-directives-dornier-model-328-100-series-airplanes
- Page: https://openairdocs.org/proposed/98-NM-59-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Dornier Model 328-100 series airplanes. This proposal would require replacement of the de- icing system timer with a new improved timer. This proposal is prompted by reports of a short circuit in the propeller and/or de-ice wiring, and subsequent failure of the timer. The actions specified by the proposed AD are intended to prevent propeller disbonding due to short circuiting in the de-icing wiring system, which could result in reduced controllability of the airplane.

## Notices in this docket

- Mar 30, 1998: Notice of proposed rulemaking (NPRM). (first notice), FR document 98-8223, comments due Apr 29, 1998 (https://www.federalregister.gov/documents/1998/03/30/98-8223/airworthiness-directives-dornier-model-328-100-series-airplanes)

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