Remarks: The compliance of this AD must be recorded in Aircraft Logbook, where applicable the requirements of this AD must be integrated into Aircraft Technical Documentation. Address inquiries concerning this AD to: Civil Aviation Authority, Airworthiness Division, Ruzyne Airport, 160 08 Prague 6, Czech Republic, tel: 420 2 33320922, fax: 420 2 20562270.

AIRBUS INDUSTRIE A310 and A300-600 Aircraft, all certified models, all serial numbers, on which AIRBUS INDUSTRIE modifications no. 06267 and 07340 have not been embodied in production.

Investigations further to an uncontained engine fire revealed that the operating logic of the fire detection and associated fire warning triggering systems may lead to engine/APU fire situations for which the fire warning goes out shortly after triggering, while the fire has not gone out.

In order to prevent such situation from reoccurring and cancel the requirement of any action from the crew to reactivate the fire warning, the following wiring modifications are rendered mandatory.

The purpose of Revision 01 of this Airworthiness Directive is to take into account Revision 05 of AIRBUS INDUSTRIE Service Bulletin A310-26-2024 and Revision 02 of SB A300-26-6038, which introduce a modification to the kit required for applying these SBs.

Before May 31st, 2001, unless already accomplished, apply the wiring modifications to the engine and APU fire detection system, in accordance with the instructions of SB A310-26-2024 revision 05 or A300-26-6038 revision 02.

REF.: AIRBUS INDUSTRIE Service Bulletins :

A310-26-2024 Revision 05 - A300-26-6038 Revision 02

(or any later approved revision)

This Revision 1 supersedes AD 1999-238-286(B) dated June 02,1999.

Original AD: JUNE 12 1999