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operating on auxiliary 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.
OPERATING MANUAL
2A-24-00 PRODUCTION AIRCRAFT SYSTEMS
Page 20
May 30/02
Revision 7
Annunciation Cause or Meaning
APU LOAD light
(amber) illuminated
above pilot’s/copilot’s
NAV display. (1)
APU electrical load for operations above 30,000 ft not
within limits.
ELWS CONFIG light
(amber) illuminated
above pilot’s/copilot’s
NAV display. (1)
APU electrical power improperly configured for operations
above 30,000 ft.
ELWS FAIL light
(amber) illuminated
above pilot’s/copilot’s
NAV display. (1)
APU electrical power unreliable for operations above
30,000 ft.
NOTE(S):
(1) SN 1156 - 1252 equipped with SPZ-8000.
(3) Advisory (Blue) CAS Messages and Annunciations:
CAS Message Cause or Meaning
AC EXT POWER AC external power is connected to airplane.
APU ALT OFF APU alternator is operating but AUX PWR switch is not
selected to ON.
Annunciation Cause or Meaning
AC EXT PWR light
(blue) illuminated on
overhead panel.
AC external power applied.
5. Limitations:
A. Standby Electrical System:
When the Standby Electrical System is in operation, the following
limitations apply:
(1) Minimum HP RPM:
Minimum HP RPM when the Standby Electrical System is in
operation is 67 percent HP RPM.
(2) Use of Speed Brakes:
Speed brakes may be used, however, operation should be slow
(approximately five (5) seconds for full range movement).
(3) Landing with Standby Electrical System Operating:
Landing is approved provided automatic ground spoilers and thrust
reversers are not used for landing. See Section 05-17-50, Landing
With Standby Electrical Power System Operating.
B. APU Alternator Electrical Load:
(1) Airplanes SN 1000 Through 1155 Without APU LOAD Meter
Installed:
The APU alternator can deliver 100% electrical power (30 kVA) on
ground or in flight from Sea Level to 22,000 ft. From 22,000 ft to
30,000 ft, the limit load decreases linearly to 50% electrical power
(15 kVA). Load shedding may be required. See APU ALTERNATOR
OPERATING MANUAL
PRODUCTION AIRCRAFT SYSTEMS 2A-24-00
Page 21
May 30/02
Revision 7
ELECTRICAL LOAD (For SN 1000 thru SN 1155 without APU
loadmeter) in Section 05-04-20, APU Inflight Operation: Alternate
Electrical Source.
(2) Airplanes SN 1156 Through 1429, And SN 1000 Through 1155
With APU LOAD Meter Installed:
The Increased Altitude APU alternator can deliver 100% electrical
power (30 kVA) on ground or in flight from Sea Level to 30,000 ft.
From 30,000 ft to 35,000 ft, the limit load decreases to 67%
electrical power (20 kVA). Load shedding may be required. See
ELWS/ASC 420 APU ALTERNATOR ELECTRICAL LOAD
ENVELOPE chart in Section 05-04-30, APU Inflight Operation:
Alternate Electrical Source - ELWS (Loadmeter) / ASC 420
Procedures.
(3) Airplanes SN 1156 Through 1429 Having ASC 420 (Removal Of
APU LOAD Meter), SN 1000 Through SN 1155 Having ASC 420,
And SN 1430 And Subs:
With the ram air scoop installed over the APU inlet door, the APU
alternator can deliver 100% electrical power (30 kVA) on ground or
in flight from Sea Level to 30,000 ft. From 30,000 ft to 35,000 ft, the
limit load decreases to 67% electrical power (20 kVA). Load
shedding may be required. See ELWS/ASC 420 APU
ALTERNATOR ELECTRICAL LOAD ENVELOPE chart in Section
05-04-30, APU Inflight Operation: Alternate Electrical Source -
ELWS (Loadmeter) / ASC 420 Procedures.
OPERATING MANUAL
2A-24-00 PRODUCTION AIRCRAFT SYSTEMS
Page 22
May 30/02
Revision 7
STANDBY ELECTRICAL
POWER Control Panel
Figure 4
OPERATING MANUAL
2A-24-00
Page 23 / 24
May 30/02
APU LOAD Meter
Figure 5
OPERATING MANUAL
2A-24-00
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ELECTRIC POWER
MONITOR Panel
Figure 6 (Sheet 1 of 8)
OPERATING MANUAL
2A-24-00
Page 27 / 28
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ELECTRIC POWER
MONITOR Panel
Figure 6 (Sheet 2 of 8)
OPERATING MANUAL
2A-24-00
Page 29 / 30
May 30/02
ELECTRIC POWER
MONITOR Panel
Figure 6 (Sheet 3 of 8)
OPERATING MANUAL
2A-24-00
Page 31 / 32
　
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