# Airworthiness Directives; Dornier Model 328-300 Series Airplanes Equipped With Certain Pratt & Whitney PW306B Engine Nacelles
> **Rule** · Final rule. · Published 2003-09-30 · Effective 2003-11-04 · 68 FR 56156
## Document
- **Document number:** 03-24488
- **Category:** airworthiness
- **Manufacturer:** Dornier Model 328-300 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 68 FR 56156
- **Publication date:** 2003-09-30
- **Effective date:** 2003-11-04
- **FAA docket:** Docket No. 2001-NM-319-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Dornier Model 328-300 series airplanes, that requires a one-time inspection of the anti-ice tubing in the engine nacelle at the joint between the anti-ice tubing adapter and duct, and also between the joint of the anti-ice shutoff valve and the same duct, to detect any air leakage at the joints. This action is necessary to prevent an uncommanded engine shutdown in a critical phase of flight due to leakage of air from a loose clamp on the anti-ice tubing joint. This action is intended to address the identified unsafe condition.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/09/30/03-24488/airworthiness-directives-dornier-model-328-300-series-airplanes-equipped-with-certain-pratt-and)
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