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2. Light will remain illuminated.
3. The time of occurrence should
be recorded.
APU ALT HOT APU alternator
temperature.
above 300° F
(149° C).
Shut off APU alternator with
ELECTRIC MASTER AUX PWR
switch.
APU LOAD
(SPZ 8400 equipped)
APU electrical
load for
operation
above 30,000
ft. not in limits.
Adjust electrical load up or down
as necessary.
APU MASTER
WARN
APU master
switch is on but
APU is not
running.
Turn master switch off or start
APU.
AUX AC POWER
FAIL
Power output
from APU ALT
has failed or
dropped off
line.
1. Turn AUX PWR switch OFF,
then ON.
2. If condition remains same, turn
AUX PWR switch OFF.
AUXILIARY HYD
HOT
Auxiliary
hydraulic pump
case
temperature
above 300° F
(149° C).
Turn off auxiliary hydraulic pump,
if practicable.
Quick Reference Handbook
REVISION 8 MESSAGES AND ANNUNCIATIONS
Oct 11/02 Page MB - 7
Caution (Amber) Messages and Annunciations, ctd… AFM 3A
Message: Cause(s): Corrective Action:
BAGGAGE DOOR
(SN 1000-1389 having
ASC 415, SN 1390 &
subs.)
Baggage door
is open or unlocked.
Close and lock baggage door as
required.
BATT 1-2 CHGR
FAIL
Battery or battery
charger
has failed or
the input power
circuit breaker
is open.
Check L/R BATT CHGR circuit
breakers on PDB:
1. If open, close circuit breaker.
2. If light remains on, deactivate
battery charger by pulling CB.
Light will remain ON.
3. See Battery or Battery
Charger Failure, page EA-20.
BATT ON BUS
DC ESS ON BATT
(SPZ-8000 airplanes
having ASC 415.)
Essential DC
Bus powered
by batteries
only.
See Essential DC Bus On Battery
Power, page EA-20.
BLEED AIR HOT,
L-R
Bleed air temperature
is
above 550°F
(288°C).
1. Switch appropriate bleed air
valve OFF.
2.When hot light is extinguished,
open isolation valve and descend
to 41,000 ft.
BLEED AIR OFF,
L-R
(SPZ-8400 airplanes
having ASC 422/422A;
SN 1445 & subs.)
Bleed air is
selected OFF.
Select bleed air ON as required.
BLEED CONFIG
(SPZ-8000 and SPZ-
8400 airplanes having
ASC 422/422A; SN
1445 & subs.)
Isolation valve
is open with
engine bleed(s)
selected ON.
1. Evaluate bleed configuration.
2. If isolation valve is open for
procedural requirements, select
engine bleed(s) OFF as
required.
BLEED PRESS HI,
L-R
Bleed air pressure
has exceeded
75 psi.
1. Switch appropriate bleed air
valve OFF.
2. Check isolation valve closed.
3. Descend to 41,000 ft.
4.When PRESS HI message is
extinguished, open isolation
valve.
BRAKE FAIL
(BRAKE-BYWIRE)
Failure of brake
system, BCS
cannot provide
braking.
See BRAKE FAIL Message
(Brake-By-Wire), page EB-7.
Quick Reference Handbook
MESSAGES AND ANNUNCIATIONS REVISION 8
Page MB - 8 Oct 11/02
Caution (Amber) Messages and Annunciations, ctd… AFM 3A
Message: Cause(s): Corrective Action:
BRAKE FAIL
(HMAB)
Loss of
combined and
auxiliary
pressure.
No braking
available.
See BRAKE FAIL Message
(HMAB), page EB-4.
BRAKE OVHT One or more
brake
assemblies
exceed
overheat limit:
1. 400° C for
airplanes SN
1156 thru
1213 and
airplanes
with ASC
167.
2. 625° C for
SN 1214 and
subs and
1000 thru
1213 with
ASC 346.
See BTMS OVHT Light On or
BRAKE OVHT Message (Brake
By Wire), page EB-9.
OR:
See BTMS OVHT Light On or
BRAKE OVHT Message
(HMAB), page EB-5.
BRAKE PEDAL
(BRAKE-BYWIRE)
Malfunctioning
brake pedal.
1. Verify inoperative pedal by
using BRAKE NUTCRKR
ORIDE switch and observing
applied brake pressure for
each brake pedal.
2. See BRAKE PEDAL Message
(Brake-By-Wire), page EB-7.
CABIN DFRN-9.6 Cabin
differential
pressure has
reached 9.6
psi.
1. Raise cabin altitude.
2. Increase cabin rate of climb, if
required.
3. Switch to manual
pressurization control, if
required.
CABIN OXYGEN
ON
Passenger
oxygen system
actuated by
　
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