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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 5 seconds.
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.
ASEL will capture when descending toward the preselect altitude and the preselected altitude is
within 10,000 feet of current altitude.
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
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.
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.
The pilot may select another altitude reference without cancelling ALT mode by depressing the
TCS button, and maneuvering the airplane to a new altitude.
The ALT mode will use a barocorrected
altitude and respond to baro knob changes to airplane
pitch angle up to ±20° limit.
ALT mode is annunciated in the vertical capture field on the PFD.
ALT
will flash for 5 seconds,
when active.
AUTOMATIC FLIGHT CONTROL SYSTEM
Flight Crew Operating Manual REV 41, Jul 08, 2004
CSP 700−6
Volume 2
04−10−24
MODES OF OPERATION: (VERTICAL) (CONT'D)
Flight Level Change (FLC) Mode
FLC mode is used to climb or descend to a new altitude reference, while maintaining an Indicated
Airspeed, or Mach reference.
FLC mode is selected on guidance panel FLC and is automatically active.
HDG AP1 FLC
ASEL
FLC is cleared when another armed vertical mode is captured.
HDG AP1 ALT
FGC will generate pitch commands to capture and track the speed reference displayed on the
selected PFD. To obtain Mach readout, Mach must be greater or equal to 0.40M.
GF0410_077 220
210
200
190
180
170
160
150
0.88
185
6
4
220
210
200
190
180
170
160
150
217
185
6
4
FLC
SELECTED MACH
READOUT
AIRSPEED
TREND VECTOR
ACTUAL MACH
READOUT
SELECTED IAS
READOUT
ACTUAL IAS
READOUT
0.856 M
SPD
PUSH CHG
FMS MAN
MAN speed selection is accomplished by selecting MAN on the outer knob and turning the inner
knob on the SPD button. A cyan airspeed bug will follow the commands from the inner knob and is
located on the airspeed tape of the selected PFD. Manual transfer from IAS to Mach speed
reference can be accomplished by pushing the SPD PUSH CHG button.
Inner Knob
When rotated, sets speed on
airspeed tape (MAN mode).
Outer Knob
When rotated, enables MAN mode
or FMS mode of airspeed reference.
GF0410_078
220
210
AIRSPEED
BUG
FMS MAN
FMS speed selection is programmed in the active flight plan in the FMS. A magenta speed bug will
appear on the airspeed tape of both PFDs.
GF0410_079
220
210
FMS IAS OR MACH
SPEED BUG
FLC
SPD
PUSH CHG
FMS MAN
If preselect altitude is above the airplane’s present altitude and there is adequate thrust, FLC
mode will climb at the speed reference until preselected altitude is captured. If thrust is
inadequate, FLC mode will hold present airplane altitude until adequate thrust is applied.
If preselect altitude is below the airplane’s present altitude and thrust is appropriate, FLC mode will
descend at the speed reference until preselected altitude is captured. If thrust is excessive, FLC
mode will decelerate the airplane at its present altitude.
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