# Airworthiness Directives; Saab Model SAAB SF340A and SAAB 340B Series Airplanes
> **Rule** · Final rule. · Published 2004-04-06 · Effective 2004-05-11 · 69 FR 17913
## Document
- **Document number:** 04-7472
- **Category:** airworthiness
- **Manufacturer:** Saab Model SAAB SF340A and SAAB 340B Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 69 FR 17913
- **Publication date:** 2004-04-06
- **Effective date:** 2004-05-11
- **FAA docket:** Docket No. 2003-NM-25-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 assistor springs and bearings with certain new assistor springs and bearings. This action is necessary to prevent possible collapse of a main landing gear upon landing 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/2004/04/06/04-7472/airworthiness-directives-saab-model-saab-sf340a-and-saab-340b-series-airplanes)
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