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C. System Circuit Breakers
SYSTEM SUB--SYSTEM CB NAME BUS BAR CB
PANEL
CB
LOCATION
NOTES
Inertial
R f
Attitude
Heading
ATT HDG 1 DC
ESSENTIAL
2
V8
Reference
System
ATT HDG 2 DC BUS 2 K4
IRS Fan IRU FAN AC BUS 2 C12 <1025>
Vol. 1 12--50--12
FLIGHT INSTRUMENTS
Attitude and Heading Reference System Sep 09/02
Flight Crew Operating Manual
CSP C--013--067
THIS PAGE INTENTIONALLY LEFT BLANK
Vol. 1 12--60--1
FLIGHT INSTRUMENTS
Standby Instruments and Clocks Sep 09/02
Flight Crew Operating Manual
CSP C--013--067
1. STANDBY INSTRUMENTS AND CLOCKS
An integrated standby instrument is located between the EICAS displays on the center
instrument panel. A standby compass is located below the center of the overhead
instrument panel. A clock is installed on both the pilot and copilot side panels.
A. Integrated Standby Instrument
The integrated standby instrument (ISI) provides standby attitude, altitude and airspeed
information to the flight crew. To retain full operational capability under emergency
conditions the ISI is powered by the battery bus. The ISI uses inputs from the alternate
pitot probe and static ports.
The ISI displays the following information:
S Attitude display
S ILS deviation
S Altitude display (corrected)
S VMO display
S Airspeed display
S Static source error correction (SSEC)
S Mach number
S Barometric pressure
S Slip-skid indication
Vol. 1 12--60--2
FLIGHT INSTRUMENTS
Standby Instruments and Clocks Sep 09/02
Flight Crew Operating Manual
CSP C--013--067
Integrated Standby Instrument
Figure 12---60---1
STD
M.47 ILS 1013 hPa
20
10
240
220
200
180
10
900
800
700
600
500
CAGE BARO
29.92 in
12
Integrated Standby Instrument
Center Instrument Panel
CAGE
Used to reset horizon
line.Use only during
stabilized level flight.
Will not operate during
power up.
STD
Used to select either
standard pressure
reference, 1013 hPa
(29.92 inHg), or baro--correction
pressure reference.
BARO
Used to adjust baro--correction
pressure reference.
Setting stored in non--volatile
memory to prevent loss during
power failure.
Brightness
Controls
Vol. 1 12--60--3
FLIGHT INSTRUMENTS
Standby Instruments and Clocks REV 3, May 03/05
Flight Crew Operating Manual
CSP C--013--067
Integrated Standby Instrument Scales
Figure 12---60---2
Horizon Line
IAS Tape
Range 40 -- 520 Kts.
Graduations every 5 Kt.
Roll Scale
Graduations every 5 degrees.
MACH Number
Displayed when
above 0.45 and
removed when
drops below 0.40.
Selected Standard
or Baro--corrected
Pressure
Pressure displayed
above (hPa) and
below (inHg) altitude
tape.
Altitude Tape
Tape reads hundreds
with graduations
every 20 feet. Box
contains thousands.
Slip/Skid Indicator
White trapezoid
slides left or right
depending on lateral
acceleration.
VMO Band (red)
From Vmo value
upwards. Roll/Sky Pointer
Pitch Scale
Graduations every 2.5 degrees.
Fixed Cross--Pointer
STD
M.47 ILS 1013 hPa
20
10
240
220
200
180
10
900
800
700
600
500
CAGE BARO
29.92 in
12
Integrated Standby Instrument
Center Instrument Panel ILS Symbols
Localizer
Green diamond with
vertical line on
horizontal scale with
square deviation dots.
Glideslope
Displays green diamond
on vertical scale with
square deviation dots.
ILS information is removed
when the ILS receiver is not
tuned to an ILS frequency.
NOTE
Vol. 1 12--60--4
FLIGHT INSTRUMENTS
Standby Instruments and Clocks Sep 09/02
Flight Crew Operating Manual
CSP C--013--067
Integrated Standby Instrument Flags
Figure 12---60---3
G/S Flag (red)
or
LOC Flag (red)
Displayed when a glideslope
or localizer failure is detected.
Corresponding glideslope or
localizer scale and pointer are
removed.
G/S
CAGE
+
_
BARO
STD
ATT
IAS ALT
LOC
SSEC ILS
ALIGNING
SSEC Flag (yellow)
Displayed when static source
error correction cannot be
computed.
ILS Flag (red)
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