5. Close-up
________
Subtask 26-23-41-420-052
A. Install the cargo fire extinguisher bottle (Ref. TASK 26-23-41-400-004).
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______________________________________________________
1.
General
_______ The portable fire extinguishers are installed in the aircraft for use if an on-board fire occurs. They are installed in positions which have easy access, and are kept fully prepared for immediate use.
2.
Component Location
__________________
**ON A/C 001-049, 101-149, 151-199, 201-299,
(Ref. Fig. 001)
R **ON A/C 051-099, 401-499,
(Ref. Fig. 001A)
**ON A/C 301-399,
(Ref. Fig. 001B)
**ON A/C ALL
3. Description
___________
A. The Portable Fire Extinguishers The portable fire extinguishers are used to extinguish a fire in the cabin, in the cockpit or in the avionics compartment. There are two different types of portable fire extinguishers. Each type is filled with a different agent, halon or liquid (water). If a fire occurs, the crew can manually operate the portable fire extinguisher to extinguish the fire.
NOTE : The portable fire extinguishers are installed in different
____ locations in the cabin and in the cockpit. Each location will be shown by a placard.
Portable Fire Extinguisher - Component Location
Figure 001
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Portable Fire Extinguisher - Typical Location
Figure 001A
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Portable Fire Extinguisher - Component Location R Figure 001B
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4. Component Description
_____________________
A. Portable Fire Extinguisher - Halon Agent
(Ref. Fig. 002)
The portable fire extinguisher is filled with halon agent and is
pressurized with nitrogen. It can be used to extinguish A, B and C
classes of fire. The portable fire extinguisher has two primary
components:
-
A cylindrical container assembly
-
A valve assembly.
(1)
The cylindrical container assembly contains the extinguishing agent. The container is metal and is painted red. It has a flat base to let it stand vertically. The container has bonded labels which show identification and information.
(2)
The valve assembly is installed on the cylindrical container and controls the release of the extinguishing agent from the container assembly. The operating head has:
-A carrying handle
-An operating lever
-
A nozzle
-
A safety device
-An indicator disk or a pressure gauge.
5. Operation
_________
NOTE : For detailed information about the use and the data of the portable
____ fire extinguisher refer also to the label. The label on the extinguisher contains the instructions for use, approval number, details of its weight and the date of the last check.
A. Portable Fire Extinguisher - Halon Agent During normal conditions the portable fire extinguisher is installed in its holder. The crew can remove the portable fire extinguisher from its holder, remove the safty device and operate it manually. The valve assembly controls the release of the extinguishing agent. When the operating lever is operated, the valve in the valve assembly opens. The pressure in the container then pushes the halon agent up the syphon tube to the nozzle. When the extinguishing agent is released through the nozzle, the pressure in the container decreases. The decreased pressure is shown on the pressure gauge. This is an indication that the extinguisher has been used.
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Portable Fire Extinguisher - Halon Agent
Figure 002
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1 1 May 01/05
1 1
1CES 1
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