Section VII
Systems
VII-22-14
FLC button - Selects/deselects flight level change mode. In FLC mode,
desired airspeed is synchronized to the aircraft's current
speed at the time of mode selection. This speed can then
be slewed up/down using the SPEED knob; turning the
knob increases or decreased speed setting in FLC mode.
Pressing the knob switches alternately between IAS and
Mach for display of airspeed on PFD. Automatic
changeover from IAS to Mach occurs at 35,000 ft in climb
and from Mach to IAS at 29,270 ft in descent. When FLC
mode is selected, a climb or descent submode is entered
automatically based on the difference between the aircraft
present altitude and the preselected altitude. If the
preselected altitude is higher than the current altitude, the
climb submode is entered. If the preselected altitude is
lower than the current altitude, the descend submode is
entered. In either case, a minimum vertical speed is
implemented, which forces the aircraft toward the
selected altitude with a certain minimum vertical speed.
VS button - Selects/deselects vertical speed mode.
There are two additional autopilot switches external to the panel. A
momentary button on the control wheel serves as the primary means to
disconnect the autopilot. Momentary button on the control wheel
engages the go-around mode.
Yaw damper remains engaged unless landing gear is down or with
flaps 40°
Caution Messages
Excessive autopilot pitch trim
-
Excessive trim forces in the yaw axis
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Excessive trim forces in the roll axis
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10 Sep 2006