# Proposed AD 94-NM-196-AD: Airbus Model A310 and A300-600 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 97-08-03
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 7, 1995, 60 FR 46541
- Comments due: October 17, 1995
- Became: [AD 97-08-03](https://openairdocs.org/ad/97-08-03)
- Docket: 94-NM-196-AD
- FR document: 95-22210
- Official PDF: https://openairdocs.org/files/sha256/32/b1/32b1a927f315644fd57c3a1efb22cb1982e9851cd70673d59e426c55079565fb (from https://www.govinfo.gov/content/pkg/FR-1995-09-07/pdf/95-22210.pdf)
- Federal Register: https://www.federalregister.gov/documents/1995/09/07/95-22210/airworthiness-directives-airbus-model-a310-and-a300-600-series-airplanes
- Page: https://openairdocs.org/proposed/94-NM-196-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Airbus Model A310 and A300-600 series airplanes. This proposal would require a functional flow test and leak test to verify if the pressure reducing valve in the cargo fire extinguishing system is in a serviceable condition, and replacement of any faulty valve with a new valve prior to extended range twin-engine operations of the airplane. This proposal is prompted by a report that, during a scheduled maintenance check, an inoperative pressure reducing valve was found in the cargo fire extinguishing system. The actions specified by the proposed AD are intended to ensure that a faulty pressure reducing valve is not installed, which could result in reduced fire protection of the cargo compartment of the airplane.

## Notices in this docket

- Sep 7, 1995: Notice of proposed rulemaking (NPRM). (first notice), FR document 95-22210, comments due Oct 17, 1995 (https://www.federalregister.gov/documents/1995/09/07/95-22210/airworthiness-directives-airbus-model-a310-and-a300-600-series-airplanes)

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