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Navigation
Source
Lubber line GF1110_014
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FLIGHT INSTRUMENTS
Flight Crew Operating Manual Rev 5, Jul 21, 2005
CSP 700−5000−6
Volume 2
11−10−12
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
Low speed Cue
Vmo
Exceedence
GF1110_015
320
300
280
285
6
4
320
1
9
Tape
220
200
190
180
170
160
150
185
6
4
0.88
0.856 M
Airspeed Rolling
Digits
Vmo
Thermometer
140
130
120
110
100
120
100
110
1
9
135
6
4
Stall
Exceedence
Low Speed
Thermometer
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 Display System (EDS) automatically switch the speed reference from IAS to MACH
at the altitude of 32,600 ft. when climbing. If MACH is switched back to IAS after climbing above
32,600 ft., the manual speed will remain the last selected. The EDS will also switch the speed
reference from MACH to IAS at the altitude of less than 32,400 ft. when descending. If IAS is
switched back to MACH after descending below 32,400 ft., 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 ³ .450 M and is removed when
£ .400 M.
FLIGHT INSTRUMENTS
Rev 5, Jul 21, 2005 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
11−10−13
AIRSPEED TAPE (CONT'D)
Airspeed Reference Bug
The active speed bug is always the bucket shaped bug on the inside of the airspeed tape. The
standby speed bug (i.e. FMS if the active mode is MAN or MAN if the active mode is FMS) is
always the triangle shaped bug on the outside of the speed bug. An airspeed reference bug is
cyan when the source of that bug’s speed is the MAN speed knob and magenta when the source if
the bug’s speed is the FMS. The value of the nonactive
speed bug can be changed by normal
operation of the source of the speed command (SPD knob in MAN or FMS programming in FMS).
Airspeed Trend
Vector
Active Airspeed
Bug (MAN)
Non−Active
Airspeed Bug
(FMS)
Selected Airspeed
Reference Display
Selected Mach
Digital Readout
Actual Mach
Readout
Guidance Panel Guidance Panel
FMS MAN
GF1110_016
220
200
190
180
170
160
150
185
6
4
0.88
0.86 M
220
200
190
180
170
160
150
185
6
4
210
320
300
280
285
6
4
130
120
110
100
90
Vmo
Exceedence
Stall
Exceedence
125
6
4
FLIGHT INSTRUMENTS
Flight Crew Operating Manual Rev 5, Jul 21, 2005
CSP 700−5000−6
Volume 2
11−10−14
TAKEOFF V SPEED
Takeoff V speeds V1, VR, V2 are displayed on the speed tape. Digital V speeds are displayed on the
bottom of the speed tape and V speed bugs are displayed on the outside of the speed tape. A final
take off speed (VFTO) bug (T) is also displayed on the outside of the speed tape. V Speeds and
VFTO speed are selected through the FMS, automatically (magenta) or manually (cyan).
　
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