Applicability: 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.

Effective date: August 12, 1999

Compliance: Required as indicated in DGAC AD 1999-238-286(B).

Remarks: Where applicable, the requirements of this AD must be integrated into the Aircraft's Logbook(s). 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.

Fire protection-Engine and auxiliary power unit (APU) fire detection system - (ATA 26)

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 from the effective date of this Airworthiness Directive.

Before May 31, 2001, unless already accomplished, apply the wiring modifications to the engine and APU fire detection system, in accordance with the instructions of AIRBUS INDUSTRIE Service Bulletin

A310-26-2024 revision 04 or A300-26-6038.

AIRBUS INDUSTRIE Service Bulletins :

A310-26-2024 Revision 04 (or any later approved revision)

A300-26-6038 (original issue or any later approved revision)

EFFECTIVE DATE: JUNE 12, 1999