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The pitch hold mode holds a flight path angle rather than a fixed pitch angle. The selected flight
director pitch angle will change with altitude, configuration and/or airspeed changes, while
climbing, descending or in level flight.
PIT mode is annunciated in the vertical capture field on the PFD. Pitch mode is cleared by
selecting another vertical mode. PIT will flash for 5 seconds, when active.
GF0410_063
0.88 AP1 300 00
20 20
220
210
23500
ROL PIT
AP
Vertical Speed (VS) Select
VS mode is used to maintain a pilot selected vertical speed reference. FGC will generate pitch
commands to align the airplane vertical rate displayed on the PFD. The airplane vertical rate is
adjustable via the pitch wheel. The pilot may select another vertical speed reference without
cancelling VS mode by depressing the TCS button and maneuvering the airplane to another
vertical speed.
GF0410_064
VNAV
VS
PITCH
WHEEL TOUCH CONTROL
STEERING
DN
UP
FGC will not generate commands to exceed Vmo or Mmo when in VS mode. When a potential
overspeed condition is detected, VS flight director pitch commands will be limited to 3 knots less
than Vmo or Mmo and MAX SPD annunciation is displayed on the PFD and an aural warning is
activated.
A − chord
GF0410_065
0.94
MAX
SPD
320
310
300
290
280
270
285
6
4
VERTICAL SPEED
TARGET READOUT
When VS mode is active, the pitch angle is limited to ± 20°. The vertical speed commands are
from −8000 feet/minute to +6000 feet/minute.
AUTOMATIC FLIGHT CONTROL SYSTEM
Rev 3, Apr 25, 2005 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
04−10−23
MODES OF OPERATION: (VERTICAL) (CONT'D)
Vertical Speed (VS) Select (Cont’d)
VS mode is activated by selecting VS on guidance panel. VS mode is annunciated in the
vertical capture field on the PFD. VS mode is cleared by selecting another vertical mode.
VS
will flash for 5 seconds, when active.
Altitude Select (ASEL) Mode
ASEL mode provides for automatic capture, flare and level off onto a preselected altitude.
ASEL is armed automatically
HDG AP1 FLC
ASEL when the airplane is flying at a continuous vertical
rate of greater than 60 feet/minute towards preselected altitude displayed on PFD for 1 second.
The preselected altitude is adjusted via the altitude preselect knob on the guidance panel.
GF0410_069
ALTITUDE
PRESELECT
KNOB
300 00
23500 PRESELECT
ALTITUDE
ALT
ASEL will capture when ascending toward the preselect altitude and preselected altitude is within
2000 feet of current altitude is within 2000 feet of current altitude and the altitude rate required to
fly a constant 0.05 G capture curve is less than the current airplane internal climb rate.
ASEL will capture when descending toward the preselect altitude and the preselected altitude is
within 10,000 feet of current altitude and the altitude rate required to fly a constant 0.05 G capture
curve is less than the current airplane internal descent rate.
HDG AP1 ASEL
Departure from selected altitude will be followed by an aural “ALTITUDE” and an aural “C Chord”
FGC will generate pitch commands to capture the preselect altitude displayed on the selected
PFD. Pitch angle is limited to ± 20°. Once the reference altitude is reached, the altitude hold mode
is activated.
HDG AP1 ALT
NOTE
When ASEL is the active (green) vertical mode, and the ALT
preselector has not been changed, selection of any other vertical
modes other than GS is inhibited.
Attempting to select any vertical mode on the guidance panel while
ASEL is active, the ASEL annunciation on the PFDs shall flash for 5
seconds to indicate acknowledgement of the button press.
While ASEL is active, preselecting the next altitude will enable
selection of FLC or VS mode.
Altitude Hold (ALT) Mode
ALT mode is used to maintain a barometric altitude reference.
ALT mode is activated automatically following preselect altitude capture, or can be activated
manually via ALT on the guidance panel to maintain a barometric altitude at time of selection.
AUTOMATIC FLIGHT CONTROL SYSTEM
Flight Crew Operating Manual Rev 3, Apr 25, 2005
CSP 700−5000−6
Volume 2
04−10−24
MODES OF OPERATION: (VERTICAL) (CONT'D)
Altitude Hold (ALT) Mode (Cont’d)
If the ALT mode is selected when the airplane is in a climb or descent, FGC will generate pitch
commands to zero the vertical speed and capture the selected altitude.
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