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detected an unflagged
miscompare between
DADC 1 and DADC 2.
(1) Identify faulty DADC by
reference to:
• Primary Flight Display
• Navigation Display
• Guidance Panel
• CABIN PRESSURE
CONTROL Panel
• Transponder Panel
(2) Select reliable DADC to
those items listed in (1).
(3) Isolate faulty DADC with
CB:
• DADC #1: Copilot’s Aft
Panel, F-3
• DADC #2: Copilot’s Aft
Panel, G-3
(4) Verify message is no
longer present and, if not
present, re-engage yaw
damper and autopilot if
desired.
DAU 1A-1B-2A-2B FL Indicated DAU channel
has failed.
Select alternate DAU channel.
DAU 1-2 MISCMP-MSG Advisory CAS message
miscomparison between
DAU “A” and “B”
channels.
(1) Compare advisory CAS
messages displayed with
DAU “A” and “B” channels.
(2) Select reliable channel.
DC CONFIG
MISMATCH
(SPZ-8400 Equipped
Airplanes)
Disagreement in the
configuration of the two
display controllers.
Resolve configuration mismatch
prior to takeoff. Mismatch
cannot be resolved with weightoff-
wheels (airborne).
DC EXT POWER DC external power is
connected to airplane.
Remove external power before
taxiing.
DISP CTLR 1-2 FAIL Indicated Display
Controller has failed.
No action required. Use
remaing Display Controller
where applicable.
OPERATING MANUAL
04-04-00 MESSAGES AND ANNUNCIATIONS PROCEDURES
Page 4
May 30/02
Revision 7
CAS Message: Possible Cause(s): Corrective Action:
DU 1-2-3-4-5-6 HOT Indicated Display Unit
(DU) is detected hot
(266° F (130° C)).
(1) Select affected DU to OFF.
(2) If message clears, select
DU back to ON.
(3) If message returns, select
affected DU to OFF and
leave OFF for remainder of
flight.
E BATT 1-2-3*-4*
DISCH
(* if installed)
Indicated Emergency
Battery is discharging.
(1) Ensure E BATT is not ON.
(2) If E BATT is not ON, pull
and reset CB to clear
message:
• FWD EMER BATT:
Pilot’s Aft Panel, H-13
• AFT EMER BATT: Pilot’s
Aft Panel, I-13
(3) If message does not clear:
(a) Leave CB closed.
(b) Re-arm system as
required.
(c) No further action is
required.
E BATT 1-2-3*-4* FAIL
(* if installed)
Indicated Emergency
Battery has failed.
Select affected E BATT to OFF.
ENGINE COWL OPEN Engine cowl door is
open.
Close cowl door.
ENGINE
EXCEEDANCE
(Deleted by ASC 415
on SPZ-8000 equipped
airplanes.)
Fault Warning
Computer has recorded
an exceedance.
(1) Check engine instruments.
(2) Reduce thrust on
appropriate engine(s) to
within limits.
EXCEEDANCE
RECORD
(SPZ-8400 Equipped
Airplanes)
This message may be caused
by an engine fire. Take
appropriate action and, if
necessary, see Section 05-12-
10, Engine Fire.
The exceedance recording may
be viewed by selecting
EXCEEDANCES on the
SYSTEMS menu of the Display
Controller.
EPR 1 - DADC 2 DADC malfunction has
caused remaining
DADC to supply
information to both EPR
systems.
Verify status of DADCs.
EPR 2 - DADC 1
EXT BATT SWITCH ON External battery switch
is ON.
Select external battery switch to
OFF.
FGC 1-2 MASTER A change in controlling
Flight Guidance
Computer (FGC) has
occurred: indicated
FGC is in control.
Message times out
automatically.
(1) Check SENSOR page.
(2) Select original FGC, if
desired, or leave as is.
OPERATING MANUAL
MESSAGES AND ANNUNCIATIONS PROCEDURES 04-04-00
Page 5
May 30/02
Revision 7
CAS Message: Possible Cause(s): Corrective Action:
FGC NOT USING IRS
1-2
IRS data has been
rejected by FGC due to
an unflagged
miscompare between
IRS 1-2 or flagged IRS
failure.
Check IRS condition/status on
FMS IRS status page. System
performance is the same with 1
or 2 IRS sources.
FGC SYSTEM TEST A Maintenance Test
(MAINT TEST) switch is
ON.
Locate MAINT TEST switch and
select to OFF:
• Left Hand Radio Rack System
Test/Monitor Panel
• Right Hand Radio Rack
System Test/Monitor Panel
• Copilot’s Aft CB Panel
(Airplanes With ASC 221
Incorporated)
FLT HYD HOT Flight hydraulic system
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湾流4操作手册 Gulfstream IV Operating Manual 3(60)
