AD 83-02-03

83-02-03 AVIONS MARCEL DASSAULT - BREGUET AVIATION: Amendment 39- 4554. Applies to all models of the AMD-BA Falcon 20 series airplanes certificated in all categories. The affected freon fire extinguishers were manufactured by Martin or ABG-SEMCA and are identified as follows: two extinguishers type 111-1555-324-12 for the aft compartment and nacelles and type 111-011-324-12 for the MICROTURBO APU if the airplane incorporates AMD-BA Service Bulletin 80, Revision 3, dated May 9, 1968; AMD-BA Service Bulletin 350, Revision 2, dated October 4, 1971; or AMD-BA Service Bulletin 556 dated September 15, 1977.

Compliance is required within the next 100 hours time in service after the effective date of this AD, unless already accomplished. To prevent the potential failure of the fire extinguisher to operate, accomplish the following:

1. Perform a one-time inspection and repair or replace, as necessary, the pyrotechnic cartridge of the fire extinguisher in accordance with paragraph2, Accomplishment Instructions, of Avions Marcel Dassault-Breguet Aviation Service Bulletin No. 657 dated November 8, 1979.

2. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region.

3. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD.

The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1).

This amendment becomes effective February 9, 1983.