# Airworthiness Directives; Saab Model SAAB SF340A and SAAB 340B Series Airplanes
> **Rule** · Final rule. · Published 2005-04-19 · Effective 2005-05-24 · 70 FR 20276
## Document
- **Document number:** 05-7686
- **Category:** airworthiness
- **Manufacturer:** Saab Model SAAB SF340A and SAAB 340B Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 70 FR 20276
- **Publication date:** 2005-04-19
- **Effective date:** 2005-05-24
- **FAA docket:** Docket No. 2003-NM-278-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Saab Model SAAB SF340A and SAAB 340B series airplanes, that requires replacement of certain hydraulic hoses with new hydraulic hoses. This action is necessary to prevent cracking and/ or rupture and subsequent failure of hydraulic hoses. Such failure could result in loss of hydraulic pressure and fluid quantity, and consequent reduced controllability of the airplane. This action is intended to address the identified unsafe condition.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2005/04/19/05-7686/airworthiness-directives-saab-model-saab-sf340a-and-saab-340b-series-airplanes)
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