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NORM
ALTN
PFD1
NORM
ALTN1
EICAS
NORM
ALTN
PFD2
ALTN2
ALTN3
PFD1 PFD2
NORM
ALTN
SG1
NORM
ALTN
SG3
NORM
ALTN
SG2
IRS ADC ADC IRS
The reversionary attitude mode, which provides attitude, heading, rate and acceleration data, but not
position data, may be selected when navigation mode is not available. This condition may occur in
the air, following a power interrupt or transient system fault. Attitude alignment takes 1 minute from
power off to ATT mode or 34 seconds from NAV to ATT mode, provided the airplane is stationary on
the ground or in straight and level flight. If excessive motion is detected, the attitude alignment is run
for an additional 20 seconds. Once attitude alignment is complete, heading is entered from the FMS.
Heading entries may be made, while the IRS is in the attitude mode, to correct for heading drift.
Rapid realignment
is possible, once the IRS is in navigation mode, by selecting the NAV/ATT switch
from NAV to OFF and back to NAV within 0.2 to 5 seconds. Velocity errors are corrected and tilt
errors are removed to correct the pitch and roll angles. The total rapid realignment
time is 32
seconds. Present position is required to be reentered.
FLIGHT INSTRUMENTS
Flight Crew Operating Manual REV 46, Jul 21, 2005
CSP 700−6
Volume 2
11−10−10
INERTIAL REFERENCE SYSTEM (CONT'D)
CAUTION
During flight, navigation reference is lost if the MSU mode select switch
is set away from NAV.
NOTE
IRS will not restart or re-align on airplane battery bus power. If airplane
primary power is lost, IRS can continue to operate on airplane battery
bus power.
IRU 1 IRU 3 IRU 2
LASERTRACK
(if installed)
WX
SPC
EGPWS
DAU 1
DAU 2
SPC SPC
EGPWS
NDU
IRS Mode Selector Panel
GF1110_012
ASCB
IRS1 IRS2 IRS3
LASERREF IV
The Global Express is equipped with the LASERREF IV. It is a combines navigation and display unit
which interfaces with all 3 IRUs. It provides back-up navigation, alternate means of initializing the 3
IRUs, and a digital display of navigation data from any one of the IRUs.
It also provides navigation capability with up to 9 waypoints, an auto NAV realign function anytime
the aircraft is not moving. Zeroes out velocity errors, an updated MAG MAPS.
FLIGHT INSTRUMENTS
REV 51, Aug 14, 2006 Flight Crew Operating Manual
CSP 700−6
Volume 2
11−10−11
PRIMARY FLIGHT INSTRUMENTS
PFD 1 and PFD 2 are digital CRT-based versions of the traditional (analog/mechanical) flight
instruments. Input to the PFDs is derived from the ADCs and IRS units selected, and commands set
on flight control panel, air data reference panel and the DCPs. The PFDs function as the following
flight instruments:
• Attitude Director Indicator (ADI)
• Horizontal Situation Indicator (HSI)
• Radio Magnetic Indicator (RMI)
• Altitude Indication
• Radio altimeter indicator
• Airspeed indicator (Mach and IAS)
• Vertical Speed Indicator (VSI)
The PFDs are the mode annunciator panel for flight director and autopilot (above the ADI display).
They also provide messages and cues for windshear alerts (on the ADI) and TCAS traffic alerts and
commands (on the VSI).
PRIMARY FLIGHT DISPLAY
18
17
4
FLIGHT INSTRUMENTS
Flight Crew Operating Manual REV 46, Jul 21, 2005
CSP 700−6
Volume 2
11−10−12
PRIMARY FLIGHT DISPLAY (CONT'D)
Attitude Director
Indicator (ADI)
Flight Director
Command Bars
Course Select/Desired
Track Pointer
Indicates Chapter in which information on item may be found.
Bearing 1 Pointer
Bearing 2 Pointer
Bearing 1
Annunciation
Bearing 2
Annunciation
Heading
Select Display
FMS
Annunciation
Course
Select Readout
Navigation
Source
Lubber line
GF1110_014
17
17
17
17
17
17
17
17
17
FLIGHT INSTRUMENTS
REV 46, Jul 21, 2005 Flight Crew Operating Manual
CSP 700−6
Volume 2
11−10−13
AIRSPEED TAPE
Indicated airspeed is derived from the selected ADC. An airspeed tape capable of displaying from 30
to 900 knots (inclusive) and an airspeed trend vector are displayed on both PFDs.
The airspeed tape will display a range of ± 40 knots from current airspeed. The tape is labeled every
10 knots below 200 knots and every 20 knots above 200 knots. A VMO thermometer will appear for
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