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TRU HOT .....................................................................................MB-19
UNDER FLOOR O’HEAT.............................................................MB-19
UTILITY HYD OFF.......................................................................MB-19
WING HOT, L-R...........................................................................MB-20
WING TEMP LOW, L-R...............................................................MB-20
YAW DAMPER OFF ....................................................................MB-20
Other Caution Annunciations .......................................................MB-21
Quick Reference Handbook
MESSAGES AND ANNUNCIATIONS REVISION 8
Page MB - 4 Oct 11/02
Caution (Amber) Messages and Annunciations AFM 3A
Message: Cause(s): Corrective Action:
AC PWR FAIL,
L-R
AC output from
converter has
dropped off
line.
Check engine idle speed. Turn
ELECTRIC MASTER, LEFT or
RIGHT PWR OFF, then ON. If
unable to reset, place switch to
OFF position.
AHRS COOL FAIL AHRS cooling
fan has failed.
Illuminates when AHRS or IRS 3
is first turned on (5 seconds) and
AHRS / IRS is in self-test. If
message illuminates at other
times, shut down AHRS / IRS 3.
ALT BRG FAIL,
L-R
Alternator main
bearing has
failed and is
operating on
auxiliary
bearing.
Operation on auxiliary bearing
can continue for 15 hours at full
load or 50 hours at no load. Light
will remain illuminated. Time of
occurrence should be recorded.
ALT FUEL FAIL,
L-R
Alternate boost
pump has
failed.
See Fuel Boost Pump Failure,
page EF-11.
ALT HOT, L-R Alternator
temperature is
above 250°F
(121°C).
Turn OFF ELECTRIC MASTER,
LEFT or RIGHT PWR. Check
EVM.
ALT MODE OFF
(Deleted by ASC 415
for SPZ 8000/8400
airplanes and SN
1390 and subs.)
Autopilot pitch
wheel has been
moved while in
altitude hold
mode or
altitude
preselect has
been reset
while in ASEL
CAP mode.
Message will
time out in 5
seconds.
Check altitude modes and
commands.
Quick Reference Handbook
REVISION 7 MESSAGES AND ANNUNCIATIONS
May 30/02 Page MB - 5
Caution (Amber) Messages and Annunciations, ctd… AFM 3A
Message: Cause(s): Corrective Action:
ANTI-SKID FAIL
(BRAKE-BYWIRE)
Normal antiskid
control
circuit or other
failure: system
has switched to
open loop
pulsed anti-skid
control. Power
switch selected
OFF.
1. Check that ANTI SKID ON /
OFF switch is ON.
2. If ON, see Anti-Skid Failure
(Brake-By-Wire), page EB-11.
ANTI-SKID FAIL
(HMAB)
Miscompare in
28 VDC power
supplies or in
nutcracker
switches.
ANTI SKID
switch OFF or
system circuit
problems.
Auxiliary
system fails to
energize or
pressure fails to
rise within 3
seconds after
brake pedals
are depressed.
See Anti-Skid Failure (HMAB),
page EB-7.
AOA HEAT 1-2
FAIL
Angle-of-attack
probe heater
failed.
Check circuit breaker (AOA PRB
HTR #1: CP, L-14; AOA PRB
HTR #2: CP, M-14.) If normal,
avoid icing conditions if possible.
If flight in icing conditions is
unavoidable, pull appropriate stall
warning computer circuit breaker
(STALL WARN CMPTR #1: CPO,
A-11; STALL WARN CMPTR #2:
CPO, B-11) and monitor other
system. Full stall barrier
protection is provided by the
operative system.
AP OFF Autopilot
disconnected
by other than
normal means.
Press autopilot disconnect button
to clear message, or re-engage
autopilot.
Quick Reference Handbook
MESSAGES AND ANNUNCIATIONS REVISION 7
Page MB - 6 May 30/02
Caution (Amber) Messages and Annunciations, ctd… AFM 3A
Message: Cause(s): Corrective Action:
AP TRIM FAIL Autotrim
function of
AFGCS has
failed.
Check Pitch Trim switch engaged
(light out).
If out:
1. Grasp yoke securely (expect
out of trim condition), then
2. Disconnect autopilot, then
3. Retrim, then:
4. Attempt to determine problem.
APU ALT BRG
FAIL
Alternator main
bearing has
failed and the
alternator is
operating on
auxiliary
bearing.
1. Operation on auxiliary bearing
can continue for 15 hours at
full load or 50 hours at no load.
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