AD/B747/68 Amdt 1 - Engine Overheat, Fire Detection and Fire Extinguishing Systems (Cth)

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES

Boeing 747 Series Aeroplanes

AD/B747/68 Amdt 1

Engine Overheat, Fire Detection and Fire Extinguishing Systems

11/89

Applicability: All Boeing 747 series aircraft line numbers 489, 494 through 496, 500 through 695, 697 through 699, 701 through 704, 706, 707, 709 through 714, 716, 718 through 720, and 724.

Requirement: 1. Engine Fire/Overheat Detection and Warning Systems Carry out a functional check of each system in accordance with Boeing Telex M-7201-89-0194 dated 31 January 1989.

2. Engine Fire Extinguishing System Wiring and Plumbing Carry out a functional check of the wiring and plumbing in accordance with Boeing Telex M-7201-89- 0200 dated 31 January 1989 as corrected by Boeing Telex M-7201-89-0284 dated 14 February 1989 for Pratt and Whitney engines; as corrected by Boeing Telex M- 7201-89-0285 dated 14 February 1989 for GE CF6-45/50 engines; and as corrected by Boeing Telex M-7201-89-0290 dated 15 February 1989 for GE CF6-80C2 engines.

Note: The plumbing functional check applies only to aircraft fitted with General Electric CF6 engines.

3. Cargo Compartment Fire Detection System

Carry out a functional check in accordance with Boeing Telex M -7201-89-0197 dated 31 January 1989 as corrected by Boeing Telex M-7201-89-0304 dated 17 February 1989.

4. Cargo Compartment Fire Extinguishing System

Carry out a functional check of the wiring in accordance with Boeing Telex M- 7201-89-0195, and the plumbing in accordance with Boeing Telex M-7201-89- 0195, dated 31 January 1989.