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If system has failed, land as soon as
practical. To retain stall barrier
protection turn utility hydraulic pump
ON if fluid is available. Turn utility
pump OFF if no fluid is available. See
Section 3-17-30: Combined Hydraulic
System Failure.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
SECTION 3
ABNORMAL
PROCEDURES
3A-8 FAA APPROVED
11 October 2002
AMBER CAUTION MESSAGES
CAS INDICATION CAUSE CORRECTIVE ACTION
L-R CONV FAN FAIL A converter cooling fan has
failed.
Record time of failure. Continued
operation for maximum of twenty-five
(25) hours is permitted. Subsequent
takeoffs are permitted upon verification
that only one cooling fan has failed.
Operation with more than one failed
cooling fan may result in damage to
and/or automatic shutdown of converter.
Light will remain illuminated. With
ASC 285 installed, message will remain
illuminated. Illumination of this
message, whether momentary or
permanently set, requires a maintenance
action.
L-R CONV HOT Converter temperature is
above 220°F (104°C).
Turn ELECTRIC MASTER, LEFT OR
RIGHT PWR OFF. Light will remain on
until temperature reduces to 190°F
(88°C). Try to turn converter back on, if
possible (after light is OFF). Try
reducing electrical load on affected
converter. If illumination recurs, turn
OFF and do not reinstate.
L-R COOL TURB HOT Cooling turbine discharge
air above 450°F (232°C)
On ground, ECS system will
automatically shutdown.
If flight, refer to Section 3,
ABNORMAL PROCEDURES, Left or
Right Cooling Turbine Hot.
L-R COWL A/I OVHT Engine cowl temperature is
above 662°F (350°C).
Turn Cowl Anti-Ice OFF. If message
persists, turn Wing Anti-Ice OFF. If
message persists, turn associated Bleed
Air OFF. Depart icing conditions.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
SECTION 3
ABNORMAL
PROCEDURES
FAA APPROVED 3A-9
31 May 2000
AMBER CAUTION MESSAGES
CAS INDICATION CAUSE CORRECTIVE ACTION
L-R COWL PRESS LOW Cowl anti-ice press is less
than 10 ±1 psi. (4 psi ±1
for airplanes SN 1190 and
subs. and SN 1000 thru
1189 with ASC 243).
Check engine power setting. Increase
thrust setting to extinguish message if
Cowl Anti-Ice pressure is less than 4 psi.
If Cowl Anti-Ice pressure gage is
inoperative, increase thrust to extinguish
message.
CPL DATA INVALID With FMS as coupled NAV
source, airplane has flown
off end of flt. plan resulting
in autopilot reverting to
heading hold and pitch hold
(IF VNAV was active).
Select any autopilot lateral and vertical
mode.
CREW OXYGEN OFF Crew oxygen bottle is shut
OFF at the bottle.
Select bottle to OPEN position at the
bottle.
DAU 1-2 MISCMP ENG Engine data miscompare
between DAU 'A' and 'B'
channels.
Compare engine data displayed with
DAU 'A' and 'B' channels. Select good
channel.
DAU 1-2 MISCMP MSG EICAS amber message
miscompare between DAU
‘A’ and ‘B’ channel.
Computer amber message displayed with
DAU ‘A’ and ‘B’ channels. Select good
channel.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
SECTION 3
ABNORMAL
PROCEDURES
3A-10 FAA APPROVED
31 May 2000
AMBER CAUTION MESSAGES
CAS INDICATION CAUSE CORRECTIVE ACTION
L-R DC POWER FAIL DC output from converter
has dropped off line.
Check engine idle. Turn ELECTRIC
MASTER, LEFT or RIGHT PWR OFF,
then ON. If unable to RESET, continue
operation, but monitor condition
frequently. If any unusual condition
occurs, place ELECTRIC MASTER,
LEFT or RIGHT PWR to OFF position.
DU FAN 1-2 FAIL Respective Display Unit
cooling fan has failed.
Fan No. 1 cools DU 1, 3 and 5. Fan No.
2 cools DU 2, 4 and 6. If Fan 1, consider
switching pilot’s side to PFD XFER. If
Fan 2, consider switching copilot’s side
to PFD XFER.
EL MISTRIM NOSE
UP/DN
Autopilot elevator trim out
of trim in direction
indicated.
No action required for momentary
message. If steady message disengage
autopilot, retrim, attempt to determine
problem.
ENG FLT LOOP ALRT Engine fire detection loop
fault detector active.
Check fire detection fault panel. Identify
engine and loop. Disable faulty loop
with fault switch.
GULFSTREAM AEROSPACE
GIV AIRPLANE FLIGHT MANUAL
SECTION 3
ABNORMAL
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