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10 10
20 20
1300
200
185
6
4
10400
20
00
80
60
95
N
33
30
W
24
21
S
15
12
E
6
3
LOC1
Attitude Director
Indicator (ADI)
Flight Director
Command Bars
Lubber
Line
Bearing 2
Pointer
Course Select/Desired
Track Pointer
Heading Bearing 1 Pointer
Select Display
Bearing 2
Annunciation
Bearing 1
Annunciation
FMS
Annunciation
Course
Select
Readout
Navigation
Source
GX_07_043
For Training Purposes Only
Sept 04
7-71
P I LOT T R A I N I N G GU I D E
ELECTRONIC DISPLAY SYSTEM
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 an overspeed condition and a low speed thermometer will
appear for a low speed condition. When IAS equals or exceeds VMO or less than
calculated stall warning speed, the digits turn red.
Airspeed Trend Vector
Airspeed trend vector represents the airspeed the airplane will attain in 10 seconds, if
current acceleration is maintained. Maximum movement of the vector is 30 knots from
current airspeed. When the vector exceeds VMO or less than calculated stall speed, by
1 knot, the digits turn amber.
Selected Airspeed Reference Display
Selected airspeed is always displayed. The readout can be displayed in knots (1 knot
increments) or Mach (0.01 Mach increments). Pushing the SPD PUSH CHG button
inner knob will toggle the speed reference from IAS to MACH or vice versa.
The Electronic Flight Instruments System (EFIS) automatically switches the speed
reference from IAS to MACH at the altitude of 32,600 feet when climbing. If MACH
is switched back to IAS after climbing above 32,600 feet, the manual speed will
remain the last selected. The EFIS will also switch the speed reference from MACH to
IAS at the altitude of less than 32,400 feet when descending. If IAS is switched back
220
200
190
180
170
160
150
185
6
4
GX_07_044
Airspeed
Tape
Airspeed
Rolling Digits
320
300
280
285
6
4
320
1
9
90
110
9
130
120
110
100
90
125
6
4
VMO Thermometer
VMO
EXCEEDENCE
Low speed
Thermometer
STALL
EXCEEDENCE
P I LOT T R A I N I N G GU I D E
ELECTRONIC DISPLAY SYSTEM
7-72 For Training Purposes Only
Sept 04
to MACH after descending below 32,400 feet, the manual speed will remain the last
selected.
Rotating the SPD PUSH CHG button outer knob sets IAS. The readout reflects the
position of the IAS/MACH target bug on both PFDs. MACH is displayed at ≥ 0.450 M
and is removed when ≤ 0.400 M.
Airspeed Reference Bug
The active speed bug (“bucket” shaped) is positioned on the inside of the speed tape.
The standby speed bug (triangular shaped) is positioned on the outside of the speed
tape. The color convention for both bugs is: cyan = MAN, magenta = FMS. The
standby bug always shows the current speed of the nonselected SPD mode (i.e., shows
the FMS speed when MAN is the current SPD mode, and vice versa). The MAN speed
button may be used to change the value of the MAN speed bug, even when FMS is the
selected SPD mode. However, the PUSH CHG to swap from IAS to Mach, or Mach to
IAS, only functions when MAN is the active SPD mode. These features allow
monitoring the current value of the standby speed bug prior to making that speed bug
the active speed bug.
FMS SPD MAN
FLC
PUSH CHG
SPD FMS MAN
FLC
PUSH CHG
220
200
190
180
170
160
150
185
6
4
GX_07_045
0.88
0.86M
GUIDANCE
PANEL
220
200
190
180
170
160
150
185
6
4
210
Selected Airspeed
Reference Display
Selected Airspeed
Reference Bug
Airspeed Trend
Vector
FMS MAN GUIDANCE
PANEL
320
300
280
285
6
4
140
130
120
110
100
125
6
4
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