CSP–900RFM206E–1
ROTORCRAFT FLIGHT MANUAL
MD900 With PW 206E
Optional Equipment
Fire Extinguishing System
FAA Approved
Original
10–50
PART IV
NORMAL PROCEDURES
No change.
PART V
PERFORMANCE DATA
No change.
PART VII
SYSTEM DESCRIPTION
The fire extinguishing system (Ref. Figure 10−19) contains two individual hermeti/
cally sealed pressurized spherical containers (bottles) that are filled with 60 cubic
inches of CF
3
BR (Bromotrifluoromethane), also known as Halon 1301, and pressur/
ized with nitrogen gas to an internal pressure of 700 PSIG. Each bottle serves as
the primary bottle for its appropriate side engine.
Each bottle is equipped with dual outlet ports, a pressure gauge with electrical
low pressure warning signal to IIDS, filler port and thermal relief valve. The outlets
ports are fitted with electrically discharged explosive squibs. The fire extinguisher
cartridges are armed and ready for firing when the fuel shutoff valves are placed
in the OFF (closed) position. The bottles are discharged when the BOTTLE DIS/
CHARGE switch is momentarily placed in the PRI (primary) or ALT (alternate)
position.
The BOTTLE DISCHARGE switch is a momentary type, three position switch located
between the left and right fuel shutoff valves on the cockpit FUEL SYSTEM panel.
Placing a fuel shutoff valve OFF arms the fire extinguishing system for that engine
and selection of PRI discharges its primary bottle. Selection of ALT discharges the
second bottle onto the same engine.
Содержание MD900 with PW206E
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