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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.
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 via flight level change switch on the guidance
panel and is automatically active. FLC is cleared when another armed vertical mode is capture.
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 0.40 M.
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
Automatic transfer from IAS to Mach speed reference will occur in climb, above 32,400 feet.
Automatic transfer by pushing the SPD PUSH CHG button. There is no auto transfer between IAS
and Mach in MAN speed.
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.
AUTOMATIC FLIGHT CONTROL SYSTEM
Rev 3, Apr 25, 2005 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
04−10−25
MODES OF OPERATION: (VERTICAL) (CONT'D)
Flight Level Change (FLC) Mode (Cont’d)
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.
FGC pitch guidance will not generate commands to exceed Vmo or Mmo. When a potential
overspeed condition exists, FLC will command a pitch maneuver to maintain a speed reference
3 knots less than Vmo or Mmo.
AUTOMATIC FLIGHT CONTROL SYSTEM
Flight Crew Operating Manual Rev 3, Apr 25, 2005
CSP 700−5000−6
Volume 2
04−10−26
VERTICAL NAVIGATION (VNAV) MODE
VNAV mode contains 4 vertical submodes
that can be flown using speed and altitude targets, that
are programmed in the active flight plan of the FMS. A double Cchord
(aural) is activated for VNAV
vertical track alerts. However, if the FD/AP active vertical mode is not a VNAV submode, the aural
vertical track alert is inhibited. Double C − chord
VNAV mode is activated by selecting VNAV on guidance panel. The vertical mode active at the time
shall remain engaged.
FMS submode
selections when in VNAV mode are as follows:
· VFLC − Operates identical to FLC mode, except that the target altitude from the FMS is used
for climb or descent. The speed command is from the active displayed speed target (MAN or
FMS) on the PFDs. VFLC will also engage if VALT is engaged and FMS initiates a climb or
descent. Also if VALT or VPTH is engaged and FLC is selected on guidance
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