# Airworthiness Directives; Dornier Model 328-300 Series Airplanes
> **Rule** · Final rule. · Published 2005-05-11 · Effective 2005-06-15 · 70 FR 24701
## Document
- **Document number:** 05-9197
- **Category:** airworthiness
- **Manufacturer:** Dornier Model 328-300 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 70 FR 24701
- **Publication date:** 2005-05-11
- **Effective date:** 2005-06-15
- **FAA docket:** Docket No. FAA-2005-20414
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all Dornier Model 328-300 series airplanes. This AD requires installing an additional mounting angle for the respective de-icing pipes at rib 9 in the leading edge area of the left- and right-hand wings. This AD is prompted by chafed de-icing lines in the wing leading edge area. We are issuing this AD to prevent chafing of the de-icing lines, which could result in a reduction in functionality of the anti-ice system, and possibly reduced controllability and performance of the airplane in icing conditions.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2005/05/11/05-9197/airworthiness-directives-dornier-model-328-300-series-airplanes)
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