SECTION II. EMERGENCY EQUIPMENT
2-2-1. Emergency Procedures.
Refer to Chapter 9 for all emergency procedures.
2-2-2. Engine Compartment Fire Extinguisher Sys-
The engine compartment fire extinguisher system (fig.
2-2-1) enables the pilot or copilot to extinguish a fire in
either engine compartment only. It is not designed to
extinguish internal engine fires. The system consists of
two FIRE PULL handles, an AGENT DISCH (agent dis-
charge) switch, a FIRE DETR (fire detector) switch on the
center instrument panel, and two extinguisher agent con-
tainers on the overhead structure at stations 482 and
502. The containers are partially filled with monobromo-
trifluoromethane (CBrF3 or CF 3BR) and pressurized with
nitrogen (table 2-2-1 provides the range of engine fire
extinguisher pressures.) The agent in one or both of the
containers can be discharged into either engine
compartment. Selection of the compartment is made by
pulling the appropriate FIRE PULL handle. In figure 2-2-1
the ENG 1 FIRE PULL handle has been pulled. Selection
of the container is made by placing the AGENT DISCH
switch in the appropriate position. In figure 2-2-1, BTL 1
has been selected.
2-2-3. FIRE PULL Handles.
Before flying the aircraft ensure that each
FIRE PULL handle NVG filter holder can be
rotated from the closed to the open posi-
tion without causing the FIRE PULL han-
dle to be pulled. Improper handling of the
NVG filter holder may cause the FIRE
PULL handle to be pulled unintentionally,
thus fuel to the affected engine will be shut
off and the engine will shut down. Do not
use sudden or excessive force when rotat-
ing the FIRE PULL handle NVG filter hold-
er from the closed to the open position.
Two control handles for the engine fire extinguisher sys-
tem (fig. 2-2-1) are labeled FIRE PULL - FUEL SHUT-
OFF on the top center section of the center instrument
panel. Each handle has a cover for the NVG filter, two
warning lights, and the necessary control switches that
close the engine fuel shutoff valve and arm the fire extin-
guisher system circuits. Power is supplied for each FIRE
PULL handle from the respective No. 1 and No. 2 DC
essential buses through the respective ENGINE NO. 1
and NO. 2 FUEL SHUTOFF circuit breakers on the No.
1 and No. 2 PDP. Power is supplied for each pair of
warning lights from the corresponding No. 1 or No. 2 AC
bus through the ENGINE NO. 1 and NO. 2 FIRE DET
circuit breakers on the No. 1 and No. 2 PDP.
Table 2-2-1. Engine Compartment Fire Extinguisher Pressures