# Airworthiness Directives; Saab Model SAAB 2000 Series Airplanes
> **Rule** · Final rule. · Published 1998-09-21 · Effective 1998-10-26 · 63 FR 50134
## Document
- **Document number:** 98-24904
- **Category:** airworthiness
- **Manufacturer:** Saab Model SAAB 2000 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 63 FR 50134
- **Publication date:** 1998-09-21
- **Effective date:** 1998-10-26
- **FAA docket:** Docket No. 98-NM-63-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Saab Model SAAB 2000 series airplanes, that requires repetitive inspections to detect chafing of the hydraulic pipe on the emergency uplock release system of the main landing gear (MLG); testing of the hydraulic pipe for leaks, if necessary; and repair of the hydraulic pipe, if necessary. This amendment also requires modification of the attachment bolt and attachment hole on the structural panel, which terminates the repetitive inspection requirements of this AD. 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 chafing between the hydraulic pipe on the emergency uplock release system of the MLG and an attachment bolt on a structural panel, which could result in rupture of the hydraulic pipe, loss of hydraulic pressure, and consequent inability to activate the emergency MLG extension.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/09/21/98-24904/airworthiness-directives-saab-model-saab-2000-series-airplanes)
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