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May 03
P I LOT T R A I N I N G GU I D E
Fire Detection and FIREX Monitor Test
Miscellaneous Test Panel
Figure 9-12
MLG Bay Overheat Test
Landing Gear Control Panel
Figure 9-13
TEST
TEST
TEST
TEST
TEST
WARN
TEST
FIRE DET
1 2 APU
BOTTLE
FAIL
L R G SWITCH
SPS TEST
FIREX MONITOR AURAL
WARN TEST
LAMP
TEST
OVSP
TEST
1
2
1
2
1
2
ENG BOTTLE
P604_09_018
FIREX MONITOR TEST Switches
(spring-loaded to normal position)
TEST – Tests applicable Firex bottle
squib circuit continuity.
FIRE DET Switch (spring-loaded to OFF)
WARN
FAIL
– Tests engine (both engine and jet
pipe/pylon) and APU fire detection loops for
continuity by simulating an overheat/fire
condition, verifies engine and APU bottle
charge.
– Tests engine (both engine and jet
pipe/pylon) and APU fire detection units’
ability to discriminate between a shorted
loop and an actual overheat/fire.
MUTED
OFF
TEST
MLG BAY OVHT TEST
OVHT FAIL
UP DN
LDG GEAR
DN LCK
REL
ANTI-SKID
ARMED
NOSE STEER
ARMED
HORN
OFF
P604_09_014
MLG BAY OVHT TEST Switch
(spring-loaded to normal position)
OVHT – Tests MLG Bay overheat loop
continuity by simulating an overheat
condition in the main landing gear bay.
MLG BAY OVHT Warning FAIL TEST Switch
(spring-loaded to normal position)
FAIL – Tests MLG Bay overheat detection control units’
ability to discriminate between a shorted loop and an
actual overheat.
FIRE PROTECTION
For Training Purposes Only
May 03
9-19
P I LOT T R A I N I N G GU I D E
Baggage Smoke Detector Test
Annunciator Panel
Figure 9-14
RESET
CALL SMK
LAV CAB
P604_09_015
SMK DET Switch (momentary-action)
Push – Tests the baggage compartment
smoke detector unit.
FIRE PROTECTION
9-20 For Training Purposes Only
Jan 04
P I LOT T R A I N I N G GU I D E
EICAS Messages
The fire and overheat protection system messages are shown on the EICAS Primary
and Status pages. The fire and overheat protection system messages and aural
warnings are listed below. A brief explanation of each message is provided.
MESSAGE MEANING AURAL WARNING
(IF ANY)
APU FIRE Fire detected in the APU enclosure. FIRE BELL
L ENGINE FIRE
Fire detected in the respective engine nacelle. FIRE BELL
R ENGINE FIRE
L JETPIPE OVHT
Overheat detected in the respective jetpipe and/or pylon area. “JETPIPE OVERR
JETPIPE OVHT HEAT”
GALLEY OVHT Galley overheat detected (if galley overheat detector is installed). TRIPLE ATTENSON
SMOKE BAGGAGE BAY Smoke detected in the baggage compartment. “SMOKE”
SMOKE TOILET Smoke detected in the lavatory area. “SMOKE”
APU BOTTLE LO APU firex bottle pressure is low.
APU FIRE FAIL APU fire detection loop is failed (shorted out).
APU NEG-G SOV
APU negative-G shutoff valve is open after actuation of the APU FIRE PUSH switch/light,
or the negative-G shutoff valve position does not match the APU PWR FUEL switch/light
position within 5 seconds.
APU SOV
APU fuel shutoff valve is open after actuation of the APU FIRE PUSH switch/light, or the
fuel shutoff valve position does not match the APU PWR FUEL switch/light position within 5
seconds.
ENG BOTTLE 1 LO
Respective engine firex bottle pressure is low.
ENG BOTTLE 2 LO
L ENG SOV Respective fuel shutoff valve is not closed after actuation of the ENG FIRE PUSH switch/
R ENG SOV light.
L FIRE FAIL
Respective fire detection loop is failed (shorted out).
R FIRE FAIL
HYD SOV 1 Hydraulic shutoff valve is not closed after actuation of the respective ENG FIRE PUSH
HYD SOV 2 switch/light.
L JETPIPE OVHT FAIL
The respective jetpipe/pylon overheat detection loop is failed (shorted out).
R JETPIPE OVHT FAIL
APU SOV CLSD APU fuel shutoff and negative-G shutoff valves have closed after actuation of the APU
FIRE PUSH switch/light.
APU SQUIB 1 OK
Respective squib has passed its self-test.
APU SQUIB 2 OK
L ENG SOV CLSD Respective engine fuel shutoff valve has closed after actuation of respective ENG FIRE
R ENG SOV CLSD PUSH switch/light.
L ENG SQUIB 1 OK
Respective squib has passed its self-test.
L ENG SQUIB 2 OK
R ENG SQUIB 1 OK
R ENG SQUIB 2 OK
HYD SOV 1 CLSD Respective hydraulic shutoff valve has closed after actuation of the respective ENG FIRE
　
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