# Airworthiness Directives; Saab Model SAAB 2000 Series Airplanes
> **Rule** · Final rule. · Published 1998-05-28 · Effective 1998-07-02 · 63 FR 29094
## Document
- **Document number:** 98-13822
- **Category:** airworthiness
- **Manufacturer:** Saab Model SAAB 2000 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 63 FR 29094
- **Publication date:** 1998-05-28
- **Effective date:** 1998-07-02
- **FAA docket:** Docket No. 96-NM-211-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Saab Model SAAB 2000 series airplanes, that requires performing a one-time inspection of the dropout boxes of the passenger oxygen system to detect discrepancies and determine whether the system operates properly; correcting any discrepancy found; and reworking or installing new components, if necessary. This amendment is prompted by a report indicating that the oxygen system failed to operate correctly after activation at a low cabin pressure due to the incorrect installation of the oxygen masks or oxygen generators during manufacturing. The actions specified by this AD are intended to ensure that a sufficient supply of oxygen is provided to airplane passengers in the event of rapid decompression of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/05/28/98-13822/airworthiness-directives-saab-model-saab-2000-series-airplanes)
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