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hydraulic
system
pressure.
1. Check flight hydraulic pressure.
2. If system has failed, land as
soon as practicable.
3. Disengage yaw damper.
4. See Flight Hydraulic System
Failure, page EF-6.
FUEL LEVEL
LOW, L-R
Fuel level in
hopper is below
approximately
650 lb (295 kg).
1. Ensure boost pumps are ON.
2. Check fuel quantity gauge.
3. OPEN cross-flow valve.
4. If fuel quantity is greater than
650 lb in appropriate tank:
• In flight, level airplane attitude
• On ground, turn boost pumps
on to fill hopper
FUEL TEMP HOT,
L-R
Fuel
temperature
above 90°C or
below 0°C.
1. Retard power and monitor
temperature indication.
2. If indication does not return to
normal, place power lever in
idle position.
OR:
1. Verify oil temperature is within
operating level at engine start.
2. Allow engine to operate at idle
until operating temperature is
reached.
3. Message will extinguish when
engine fuel temperature is
above 0°C.
FWD RADIO
RACK HOT
Radome, left or
right equipment
bay temperature
has
exceeded
200°F (93°C).
1. Attempt to isolate hot
equipment and shut down.
2. Turn off unnecessary
equipment.
HYD QTY LOW Combined or
Flight hydraulic
system quantity
is low.
1. Check system for leak using
HYDRAULICS system page.
2. If leak is evident, expect
system to fail. See the Fuel /
Hydraulics Index, page EF-1,
for appropriate procedure.
ICE DETECTED
(If Installed)
Ice detected by
probe.
Select cowl and/or wing anti-ice
on, as appropriate or depart icing
condition.
Quick Reference Handbook
REVISION 8 MESSAGES AND ANNUNCIATIONS
Oct 11/02 Page MB -15
Caution (Amber) Messages and Annunciations, ctd… AFM 3A
Message: Cause(s): Corrective Action:
IRS 1-2 ALN
FAULT
Improper
PRESENT
POSITION
entry or excess
airplane motion
while in align
mode.
1. Check PRESENT POSITION.
2. If incorrect, re-enter.
3. If correct or if excess motion is
suspected, turn IRS off for 3
seconds then back to ALIGN
and re-enter PRESENT
POSITION.
IRS 1-2-3 COOL
FAIL
(SPZ 8400 equipped)
Respective IRS
cooling fan has
failed.
Shut down IRS.
IRS 1-2-3 ON
BATTERY
Respective IRS
has lost normal
power source
and has
reverted to
battery power.
1. Check normal bus power
source to IRS and restore, if
able.
2. Expect limited IRS endurance.
MACH TRIM LIMIT Elevator trim
has reached
electrical trim
limit while
operating
airplane in
Mach Trim
speed region
(greater than
0.80 Mach).
Retrim or slow airplane.
MACH TRIM OFF Pitch trim
switch OFF or
electric trim
system has
failed (message
inhibited at less
than 0.82
Mach).
1. Check pitch trim switch
engaged (light out).
2. If switch engaged, check STAB
AUG SERVO circuit breakers
(CPO: A-6, B-6.)
3. Observe mach trim inop speed.
4. See GIV AFM Section 1-22-
10: Mach Trim Compensation
/ Electric Elevator Trim.
MAIN FUEL FAIL,
L-R
Main boost
pump has
failed.
1. Select alternate boost pump.
2. Turn failed pump OFF and pull
appropriate CB on PDB.
3. See Fuel Boost Pump
Failure, page EF-11.
Quick Reference Handbook
MESSAGES AND ANNUNCIATIONS REVISION 8
Page MB - 16 Oct 11/02
Caution (Amber) Messages and Annunciations, ctd… AFM 3A
Message: Cause(s): Corrective Action:
PAX OXYGEN
OFF
Passenger
oxygen bottle is
shut OFF at
bottle.
Select bottle to OPEN position at
the bottle.
PITOT HT FAIL,
L-R
Pitot tube
heater
elements not
energized.
1. Check PITOT HEAT switch ON
and circuit breaker(s) – IN (L
PITOT HT CONT: CP, L-12; L
PITOT HT PWR: CP, L-11; R
PITOT HT CONT: CP, M-12; R
PITOT HT PWR: CP, M-11.)
2. If PITOT HEAT illuminates,
expect erroneous indications of
ASI, Air Data System
Computer, Airspeed Warning
Sensor, and Mach Trim
Compensation.
3. Depart icing conditions.
RETRIM L-R
WING DOWN
Lateral axis out
of trim.
1. Grasp control yoke firmly.
2. Disconnect autopilot and retrim
airplane in direction indicated.
SNGL RUDDER
　
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