# Proposed AD 2002-NM-39-AD: Airbus Model A300 B4-600, B4-600R, and F4-600R (Collectively Called A300-600) Series Airplanes; and Model A310 Series Airplanes; Equipped With Pratt & Whitney JT9D-7R4 or 4000 Series Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2004-14-17
- Products: Airbus Industrie
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 14, 2003, 68 FR 17893
- Comments due: May 14, 2003
- Became: [AD 2004-14-17](https://openairdocs.org/ad/2004-14-17)
- Docket: 2002-NM-39-AD
- FR document: 03-9015
- Official PDF: https://openairdocs.org/files/sha256/f7/a3/f7a3beac83eca3528583cf3c124382753523da4c52f0cf23c220b12ade08dbc7 (from https://www.govinfo.gov/content/pkg/FR-2003-04-14/pdf/03-9015.pdf)
- Federal Register: https://www.federalregister.gov/documents/2003/04/14/03-9015/airworthiness-directives-airbus-model-a300-b4-600-b4-600r-and-f4-600r-collectively-called-a300-600
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A1A3DAE96A7F083185256D080050888B.0001
- Page: https://openairdocs.org/proposed/2002-NM-39-AD

## Summary

This document proposes the supersedure of an existing airworthiness directive (AD), applicable to certain Airbus Model A300-600 and A310 series airplanes, that currently requires deactivating both thrust reversers and revising the airplane flight manual (AFM) to ensure safe and appropriate performance during certain takeoff conditions. This action would require installing modifications that will add an independent third line of defense on the thrust reversers, which would enhance their redundancy and terminate the requirements of the existing AD. The actions specified by the proposed AD are intended to prevent in-flight deployment of the thrust reversers, which could result in reduced controllability of the airplane. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Apr 14, 2003: Notice of proposed rulemaking (NPRM). (first notice), FR document 03-9015, comments due May 14, 2003 (https://www.federalregister.gov/documents/2003/04/14/03-9015/airworthiness-directives-airbus-model-a300-b4-600-b4-600r-and-f4-600r-collectively-called-a300-600)

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