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If an overheat condition is detected, the appropriate
FIRE light will annunciate the engine to be extinguished.
To
activate the extinguisher, open the guard for the appropriate
engine and press the FIRE light.
Freon, under pressure, will
be discharged to the engine and engine accessory compart-
ments.
The amber light E (Figure 7-4) will illuminate after
the extinguisher has been discharged and will continue to
show empty until a new bottle is installed.
The FIRE light
will remain illuminated until compartment temperatures cool.
NORMAL PROCEDURES
Before Takeoff
(1)
Press the test switch - all lights should illumin-
ate.
EMERGENCY PROCEDURES
If a fire warning light indicates an engine compartment
fire and is confirmed or if a fire is observed without a fire
warning light:
(1)
(2)
(3)
Shut
(a)
(b)
(c)
(d)
Open
Land
down the appropriate engine as follows:
Mixture control - IDLE CUT-OFF.
Propeller - FEATHER.
Magnetos - OFF.
Fuel selector - OFF.
the appropriate guard and push FIRE light.
as ·soon as practical.
NOTE
Better results may be obtained if the air-
flow through the nacelle is reduced by
slowing the aircraft (as slow as practical)
prior to actuating the extinguisher.
SERVICING
The system should be checked each 100 hours or annual
inspection whichever occurs first.
7-21
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