# Proposed AD 96-NM-66-AD: Airbus Model A310 and A300-600 Series Airplanes Equipped With General Electric CF6-80C2 Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 99-06-06
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 17, 1998, 63 FR 69571
- Comments due: January 19, 1999
- Became: [AD 99-06-06](https://openairdocs.org/ad/99-06-06)
- Docket: 96-NM-66-AD
- FR document: 98-33387
- Official PDF: https://openairdocs.org/files/sha256/52/a5/52a52bf24946a4c9e54ff9438ff6e9cc37736e5633c4f668bc57041bb3403a00 (from https://www.govinfo.gov/content/pkg/FR-1998-12-17/pdf/98-33387.pdf)
- Federal Register: https://www.federalregister.gov/documents/1998/12/17/98-33387/airworthiness-directives-airbus-model-a310-and-a300-600-series-airplanes-equipped-with-general
- Page: https://openairdocs.org/proposed/96-NM-66-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 repetitive flow checks of the hydraulic pump drain system to ensure that the system is not clogged, and correction of any discrepancy. This proposal also would require replacement of the existing magnetic seals of the accessory gearbox assembly with new, improved seals. Replacement of certain seals would terminate the requirement for repetitive flow checks. This proposal also would require replacement of the engine drain modules with drain manifolds. 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 contamination of the engine accessory gearbox oil with hydraulic fluid, which could result in an in-flight engine shutdown.

## Notices in this docket

- Dec 17, 1998: Notice of proposed rulemaking (NPRM). (first notice), FR document 98-33387, comments due Jan 19, 1999 (https://www.federalregister.gov/documents/1998/12/17/98-33387/airworthiness-directives-airbus-model-a310-and-a300-600-series-airplanes-equipped-with-general)

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