# Proposed AD 98-NM-13-AD: Airbus Model A300, A310, and A300-600 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 98-11-08
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 27, 1998, 63 FR 14849
- Comments due: April 27, 1998
- Became: [AD 98-11-08](https://openairdocs.org/ad/98-11-08)
- Docket: 98-NM-13-AD
- FR document: 98-8096
- Official PDF: https://openairdocs.org/files/sha256/1d/7e/1d7e8156ef13a0944865ef1dbdf6c508fc36afa5600071dbc6eb89bd20c1e215 (from https://www.govinfo.gov/content/pkg/FR-1998-03-27/pdf/98-8096.pdf)
- Federal Register: https://www.federalregister.gov/documents/1998/03/27/98-8096/airworthiness-directives-airbus-model-a300-a310-and-a300-600-series-airplanes
- Page: https://openairdocs.org/proposed/98-NM-13-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Airbus Model A300, A310, and A300-600 series airplanes. This proposal would require replacement of the non-return valves located in the engine fuel feed lines on the outer fuel tank with new return valves; and, for certain airplanes, replacement of the inner tank booster pump canisters with modified canisters. This proposal is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by the proposed AD are intended to prevent sticking of non-return valves located in the fuel system, which could result in an internal fuel transfer from the center tank to the inner or outer tank. Such a transfer of fuel could lead to fuel spillage overboard through the vent system, and consequent insufficient fuel for the airplane to reach its flight destination.

## Notices in this docket

- Mar 27, 1998: Notice of proposed rulemaking (NPRM). (first notice), FR document 98-8096, comments due Apr 27, 1998 (https://www.federalregister.gov/documents/1998/03/27/98-8096/airworthiness-directives-airbus-model-a300-a310-and-a300-600-series-airplanes)

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