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Section 3.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
SECTION 3
ABNORMAL
PROCEDURES
FAA APPROVED 3A-5
11 October 2002
AMBER CAUTION MESSAGES
CAS INDICATION CAUSE CORRECTIVE ACTION
BATT ON BUS
DC ESS ON BATT
(added by ASC 415 for
SPZ 8000 airplanes)
Essential DC Bus powered
by batteries only.
Refer to Section 3, Essential DC Bus on
Battery Power.
L-R BLEED AIR HOT Bleed air temperature is
above 550°F (288°C).
Switch appropriate bleed air valve OFF.
When hot light is extinguished, open
isolation valve and descend to 41,000 ft.
L-R BLEED AIR OFF
(Added by ASC 422/422A
for SPZ 8400 equipped
airplanes and SN 1445 and
subs)
Bleed Air is selected OFF. Select Bleed Air ON as required.
BLEED CONFIG
(added by ASC 422/422A for
SPZ 8000/8400 equipped
airplanes and SN 1445 and
subs)
Isolation valve is open with
engine bleed selected ON.
Evaluate bleed configuration. If Isolation
Valve is open for procedural
requirements, select engine bleed(s) OFF
as required.
L-R BLEED PRESS HI Bleed air pressure has
exceeded 75 psi.
Switch appropriate bleed air valve OFF.
Check isolation valve closed. Descend
to 41,000 ft. When Press Hi message is
extinguished, open isolation valve.
BRAKE FAIL
(BRAKE-BY-WIRE)
Failure of brake system,
BCS cannot provide
braking.
See Section 3 for procedure.
BRAKE FAIL
(HMAB)
Loss of combined and
auxiliary pressure.
No braking available.
See Section 3 for procedure.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
SECTION 3
ABNORMAL
PROCEDURES
3A-6 FAA APPROVED
11 October 2001
AMBER CAUTION MESSAGES
CAS INDICATION CAUSE CORRECTIVE ACTION
BRAKE OVHT One or more brake
assemblies exceed overheat
limit:
400°C for airplanes SN
1156 thru 1213 and
airplanes with ASC 167.
625°C for SN 1214 and
subs and 1000 thru 1213
with ASC 346.
See Section 3, ABNORMAL
PROCEDURES, BRAKE OVHT.
BRAKE PEDAL
(BRAKE-BY-WIRE)
Malfunctioning brake pedal. Verify inoperative pedal by using
BRAKE NUTCRKR ORIDE switch and
observing applied brake pressure for
each brake pedal. See Section 3,
ABNORMAL PROCEDURES.
CABIN DFRN-9.6 Cabin differential pressure
has reached 9.6 psi.
Raise cabin altitude. Increase cabin rate
of climb, if required. Switch to manual
pressurization control, if required.
CABIN OXYGEN ON Passenger oxygen system
actuated by either manual or
automatic means.
No action required if passengers require
cabin oxygen mask deployment. If
masks deployed in error, repack masks
and reset system.
CABIN PRES MANUAL Cabin pressurization
controller has been
switched to manual control
automatically or manually.
Cycle Auto/Manual Switch to AUTO;
check system. If OK, leave switch
AUTO. If not, switch to MANUAL and
control cabin pressurization with Manual
Control Knob.
CHECK DU 1-2-3-4-5-6 Information on indicated
Display Unit may be
incorrect.
Verify data on indicated Display Unit
and if incorrect select different sensor.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
SECTION 3
ABNORMAL
PROCEDURES
FAA APPROVED 3A-7
11 October 2002
AMBER CAUTION MESSAGES
CAS INDICATION CAUSE CORRECTIVE ACTION
CHECK HYD
QUANTITY
Either Combined and/or
Flight hydraulic quantity is
low.
Select hydraulic synoptic and verify
which quantity is low. For loss of
Combined hydraulic quantity, refer to
Section 3-17-30. For loss of Flight
hydraulic quantity refer to Section
3-17-40. For loss of both systems, refer
to Section 4-17-10: Dual Hydraulic
System Failure.
CHECK PFD 1 OR 2
(SPZ 8400 equipped)
Erroneous information on
Primary Flight Displays
(PFDs).
1. Check pitch, roll, airspeed and
altitude on both PFDs.
2. Compare with standby instruments to
verify information is correct.
CHECK V SPEEDS The Flight Management
Systems have computed V
speeds that are different.
In flight: V speeds have
dropped from one Display
Controller only.
Compare V-Speeds, verify initialization
and FMS status for mode of operation.
In flight: Check airspeed. Accelerate to
above 200 KCAS to get V speeds to drop
from remaining Display Controller.
CMB HYD FAIL Failure of combined
hydraulic system pressure.
Check combined hydraulic pressure.
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