# Airworthiness Directives; Saab Model SAAB 2000 Series Airplanes
> **Rule** · Final rule. · Published 2000-01-12 · Effective 2000-02-16 · 65 FR 1761
## Document
- **Document number:** 00-502
- **Category:** airworthiness
- **Manufacturer:** Saab Model SAAB 2000 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 65 FR 1761
- **Publication date:** 2000-01-12
- **Effective date:** 2000-02-16
- **FAA docket:** Docket No. 99-NM-126-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Saab Model SAAB 2000 series airplanes, that requires a measurement of the extension of the piston in the retract actuator of the main landing gear (MLG); and corrective action, if necessary. This amendment also requires repetitive replacement of the retract actuator with a repaired retract actuator, or repetitive replacement of the piston in the retract actuator with a new piston. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent fatigue failure of the piston in the retract actuator of the MLG, and reduced structural integrity of the MLG.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2000/01/12/00-502/airworthiness-directives-saab-model-saab-2000-series-airplanes)
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