# Proposed AD 97-NM-126-AD: Saab Model SAAB 2000 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 97-24-14
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 23, 1997, 62 FR 49634
- Comments due: October 21, 1997
- Became: [AD 97-24-14](https://openairdocs.org/ad/97-24-14)
- Docket: 97-NM-126-AD
- FR document: 97-25168
- Official PDF: https://openairdocs.org/files/sha256/d4/96/d496ef98ded9113dbf8dbc36e558e2a1f7a7f6065f54f7faa0159aa997575f34 (from https://www.govinfo.gov/content/pkg/FR-1997-09-23/pdf/97-25168.pdf)
- Federal Register: https://www.federalregister.gov/documents/1997/09/23/97-25168/airworthiness-directives-saab-model-saab-2000-series-airplanes
- Page: https://openairdocs.org/proposed/97-NM-126-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Saab Model SAAB 2000 series airplanes. This proposal would require inspection of the two-way check valve on the engine fire extinguishing system for discrepancies, and corrective action, if necessary. This proposal is prompted by issuance of mandatory continued airworthiness information by a foreign civil airworthiness authority. The actions specified by the proposed AD are intended to prevent discrepancies of the check valve, which could result in improper functioning of the engine fire extinguishing system.

## Notices in this docket

- Sep 23, 1997: Notice of proposed rulemaking (NPRM). (first notice), FR document 97-25168, comments due Oct 21, 1997 (https://www.federalregister.gov/documents/1997/09/23/97-25168/airworthiness-directives-saab-model-saab-2000-series-airplanes)

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