# Proposed AD 98-NM-366-AD: Dornier Model 328-100 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 99-19-36
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 16, 1999, 64 FR 38378
- Comments due: August 16, 1999
- Became: [AD 99-19-36](https://openairdocs.org/ad/99-19-36)
- Docket: 98-NM-366-AD
- FR document: 99-17864
- Official PDF: https://openairdocs.org/files/sha256/8d/2a/8d2a9ac460dc0cb19c940e68261b954a0ff5bddb72cac7bf008b31ce65280564 (from https://www.govinfo.gov/content/pkg/FR-1999-07-16/pdf/99-17864.pdf)
- Federal Register: https://www.federalregister.gov/documents/1999/07/16/99-17864/airworthiness-directives-dornier-model-328-100-series-airplanes
- Page: https://openairdocs.org/proposed/98-NM-366-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 a one-time inspection to measure the offset of the de-icing tubing adjacent to the refueling panel on the right-hand wing, and replacement with new improved tubing, if necessary. 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 a blockage in the de-icing tubing which could result in a malfunction of the de-icing boot. This malfunction would be unknown to the flight crew, and could lead to reduced controllability of the airplane during flight in icing conditions.

## Notices in this docket

- Jul 16, 1999: Notice of proposed rulemaking (NPRM). (first notice), FR document 99-17864, comments due Aug 16, 1999 (https://www.federalregister.gov/documents/1999/07/16/99-17864/airworthiness-directives-dornier-model-328-100-series-airplanes)

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