# Proposed AD 99-NM-08-AD: Airbus Model A310-300 and A300-600R Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 99-21-21
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 20, 1999, 64 FR 38848
- Comments due: August 19, 1999
- Became: [AD 99-21-21](https://openairdocs.org/ad/99-21-21)
- Docket: 99-NM-08-AD
- FR document: 99-18411
- Official PDF: https://openairdocs.org/files/sha256/28/f2/28f29c67e1b163371154dcf069f236bb929fb0b8d2902dfd9a6378b126807d5e (from https://www.govinfo.gov/content/pkg/FR-1999-07-20/pdf/99-18411.pdf)
- Federal Register: https://www.federalregister.gov/documents/1999/07/20/99-18411/airworthiness-directives-airbus-model-a310-300-and-a300-600r-series-airplanes
- Page: https://openairdocs.org/proposed/99-NM-08-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Airbus Model A310-300 and A300-600R series airplanes. This proposal would require installation of a new cover assembly, associated new drain and vent pipework, and a new electrical harness on the trimmable horizontal stabilizer for the fuel tank water scavenge motive pump. 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 fuel leakage from the seal of the water scavenge pumps, which, if not corrected, could result in leakage of fuel into fuselage areas not designed for fuel, and consequent potential for fuel to be in contact with a fuel ignition source.

## Notices in this docket

- Jul 20, 1999: Notice of proposed rulemaking (NPRM). (first notice), FR document 99-18411, comments due Aug 19, 1999 (https://www.federalregister.gov/documents/1999/07/20/99-18411/airworthiness-directives-airbus-model-a310-300-and-a300-600r-series-airplanes)

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