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bearing.
APU ALT FAILED BRG light (amber)
illuminated on overhead panel.
APU alternator main bearing has failed
and alternator is operating on auxiliary
bearing.
R ALT FAILED BRG light (amber)
illuminated on overhead panel.
Right alternator main bearing has failed
and alternator is operating on auxiliary
bearing.
L/R ENG IDLE light (amber) illuminated
on windshield center post.
Engine idle is in low range when it
should be scheduled to high range.
OR:
Engine idle is in high range when it
should be scheduled to low range.
Amber chevron illuminated on pilot’s/
copilot’s AOA indexer. AOA for approach and landing is too low.
AP OFF light (amber) illuminated on
Pilot’s / Copilot’s Master Warning and
Caution Lights Panel.
Autopilot disconnected.
AT OFF light (amber) illuminated on
Pilot’s / Copilot’s Master Warning and
Caution Lights Panel.
Autothrottle disconnected.
LOW FUEL light(s) (amber) illuminated
on standby fuel quantity indicator.
Fuel level in respective hopper is below
approximately 650 lb (295 kg).
APU LOAD light (amber) illuminated
above DU 2 or 5.
(SPZ-8400 Equipped Aircraft)
APU electrical load for operations above
30,000 ft not within limits.
ELWS CONFIG light (amber) illuminated
above DU 2 or 5.
(SPZ-8400 Equipped Aircraft)
APU electrical power improperly
configured for operations above 30,000
ft.
OPERATING MANUAL
04-03-00 MESSAGES AND ANNUNCIATIONS PROCEDURES
Page 18
October 11/02
Revision 8
Annunciation: Cause or Meaning:
ELWS FAIL light (amber) illuminated
above DU 2 or 5.
(SPZ-8400 Equipped Aircraft)
APU electrical power unreliable for
operations above 30,000 ft.
N COOL VALVE OPEN light (amber)
illuminated above DU 2 or 5.
Nose compartment cooling valve is open.
HORN SILENCE light (amber)
illuminated on Landing Gear Control
Panel.
Airplane is below 1200 ft AGL (radio
altitude), all three landing gear not down
and locked, flaps less than 22°, and
power lever is retarded below 70%.
DFRN PRESS light (amber) illuminated
on Differential Pressure Indicator. Cabin differential pressure ≥ 9.6 PSI.
OPERATING MANUAL
MESSAGES AND ANNUNCIATIONS PROCEDURES 04-03-00
Page 19
October 11/02
Revision 8
OPERATING MANUAL
THIS PAGE IS INTENTIONALLY LEFT BLANK.
04-03-00 MESSAGES AND ANNUNCIATIONS PROCEDURES
Page 20
October 11/02
ADVISORY MESSAGES AND ANNUNCIATIONS
04-04-10: Crew Alerting System (CAS) Advisory Messages and
Procedures
CAS Message: Possible Cause(s): Corrective Action:
AC EXT POWER AC external power is
connected to airplane.
Remove external power before
taxiing.
AP CTLR SW STUCK Autopilot (A/P) ON/OFF
switch on flight
guidance panel is stuck
in, preventing other
selections.
Attempt to free stuck switch.
AP ENGAGE INHIBIT An attempt to engage
autopilot has been
inhibited by one or more
of the following
conditions:
• Autopilot Disconnect
(A/P DISC) button
active
• Go-Around (GA)
switch active
• Airplane on ground
and airspeed less
than 50 KCAS
• Stick shaker is active
• Touch Control
Steering (TCS) switch
active
• Trim switch active (up
or down)
Correct inhibiting situation and
attempt re-engagement.
APU ALT OFF APU alternator is
operating but AUX PWR
switch is not selected to
ON.
Select AUX PWR switch to ON.
APU EXCEEDANCE Fault Warning
Computer (FWC) has
recorded an
exceedance.
This message may be caused
by an APU fire. Take
appropriate action and, if
necessary, see Section 05-12-
30, APU Fire.
The exceedance recording may
be viewed by selecting
EXCEEDANCES on the
SYSTEMS menu of the Display
Controller.
OPERATING MANUAL
MESSAGES AND ANNUNCIATIONS PROCEDURES 04-04-00
Page 1
May 30/02
Revision 7
CAS Message: Possible Cause(s): Corrective Action:
AT ENGAGE INHIBIT An attempt to engage
autothrottle has been
inhibited by one or more
of the following
conditions:
• Autothrottle
Disconnect (A/T
DISC) button active
• Autothrottle Arm (A/T
ARM) switch on Flight
Guidance Panel not
selected to ON
• Both engines not
running
• EPR below 1.17
• ISOLATION valve
selected to OPEN
Correct inhibiting situation and
　
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