曝光台 注意防骗
网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者
valve to OPEN.
(b) Descend to 41,000 ft.
L-R BLEED AIR OFF
(SPZ-8400 equipped
airplanes having ASC
422/422A; SN 1445 &
subs.)
BLEED AIR is selected
OFF.
Select BLEED AIR ON as
required.
OPERATING MANUAL
MESSAGES AND ANNUNCIATIONS PROCEDURES 04-03-00
Page 3
October 11/02
Revision 8
CAS Message: Possible Cause(s): Corrective Action:
BLEED CONFIG
(SPZ-8000/8400
equipped airplanes
having ASC 422/422A;
SN 1445 & subs.)
ISOLATION valve is
OPEN with engine
bleed selected ON.
(1) Evaluate bleed
configuration.
(2) If ISOLATION valve is
OPEN for procedural
reasons, select engine
bleed(s) OFF as required.
L-R BLEED PRESS HI Bleed air pressure has
exceeded 75 psi.
(1) Select appropriate BLEED
AIR switch to OFF.
(2) Verify ISOLATION valve is
CLOSED.
(3) Descend to 41,000 ft.
(4) When BLEED PRESS HI
message is extinguished,
select ISOLATION valve to
OPEN.
BRAKE FAIL
(Brake-By-Wire)
Failure of brake system.
BCS cannot provide
braking.
See Section 05-06-10, BRAKE
FAIL Message (Brake-By-Wire).
BRAKE FAIL
(HMAB)
Loss of Combined and
Auxiliary hydraulic
system pressure. No
braking is available.
See Section 05-06-20, BRAKE
FAIL Message (HMAB).
BRAKE OVHT One or more brake
assemblies has
exceeded temperature
limit:
• 400°C for airplanes
SN 1156 through
1213, and airplanes
with ASC 167
• 625°C for airplanes
SN 1214 and
subsequent, and SN
1000 through 1213
with ASC 346
See Section 05-06-60, BTMS
OVHT Light On Or BRAKE
OVHT Message.
BRAKE PEDAL
(Brake-By-Wire)
Malfunctioning brake
pedal.
Verify inoperative pedal by
using BRAKE NUTCRKR
ORIDE switch and observing
applied brake pressure for each
pedal. See Section 05-06-40,
BRAKE PEDAL Message
(Brake-By-Wire).
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 either
by manual or automatic
means.
No action required if
passengers require cabin
oxygen mask deployment. If
masks are deployed in error,
repack masks and reset system.
OPERATING MANUAL
04-03-00 MESSAGES AND ANNUNCIATIONS PROCEDURES
Page 4
October 11/02
Revision 8
CAS Message: Possible Cause(s): Corrective Action:
CABIN PRES MANUAL Cabin pressurization
controller has been
switched to MANUAL
control, either
automatically or
manually.
(1) Cycle AUTO / MANUAL
switch to AUTO and check
system.
If problem is resolved, leave
switch in AUTO. If problem is
not resolved:
(1) Place AUTO / MANUAL
switch in MANUAL.
(2) Control cabin
pressurization with manual
control (MAN HOLD) knob.
CHECK DU 1-2-3-4-5-6 Information on indicated
Display Unit (DU) may
be incorrect.
Verify data on indicated DU
and, if incorrect, select different
sensor.
CHECK HYD
QUANTITY
Combined and/or Flight
hydraulic system fluid
quantity is low.
Select HYDRAULICS synoptic
page and verify the system
having a low fluid quantity.
For Combined hydraulic system,
see Section 05-17-30,
Combined Hydraulic System
Failure.
For Flight hydraulic system, see
Section 05-17-40, Flight
Hydraulic System Failure.
For loss of both hydraulic
systems, see Section 05-17-10,
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 VSPEEDS FMSs have computed
V-Speeds that are
different.
(1) Compare V-Speeds.
(2) Verify initialization and
FMS status for mode of
operation.
CMB HYD FAIL Failure of Combined
hydraulic system
pressure.
Check Combined hydraulic
system pressure.
(1) If system has failed, land
as soon as practical.
(2) To retain stall barrier
protection, select UTILITY
PUMP ON if fluid is
available. Select UTILITY
PUMP OFF if fluid is not
available.
(3) See Section 05-17-30,
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：
湾流4操作手册 Gulfstream IV Operating Manual 3(52)
