AUTOPILOT
AIRPLANE
OPERATIONS
MANUAL
2-19-10
Page
8
Code
01
REVISION 36
AOM-145/1114
The mode will be canceled and/or inhibited if any of the following
conditions occur:
Changing the preselected altitude.
Selecting ALT, VS, FLC, or SPD modes.
Glide slope capture.
When the air data is invalid.
Pressing the Go Around Button.
FLIGHT LEVEL CHANGE MODE (FLC)
The Flight Level Change mode (FLC) provides means of climbing or
descending to a preselected altitude at a pre-programmed schedule.
When the preselected altitude is above the current altitude and the
flight level change mode is selected, the Flight Director provides a
speed command at the predetermined climb speed schedule. When
the preselected altitude is below the current altitude and FLC is
selected, the FD provides a command to descend at a determined rate
of descent. The PFD will display the current IAS, Mach or vertical
speed bug as appropriate and the target speed can be adjusted only
by deselecting the flight level change mode.
As the airplane approaches the preselected altitude, the Flight Director
will cycle among ASEL ARM, ASEL CAP, and ALT HOLD to capture
the preselected altitude.
The following protections are provided with this mode:
Maximum normal and longitudinal acceleration: 0.1 G.
Maximum airspeed: V
MO
or M
MO
.
System will maintain the preselected altitude.
The Flight Level Change mode may be activated by selecting an
altitude and pressing the FLC button in the Flight Guidance Controller.
This mode is annunciated on the PFD by the CLB label, when
following the IAS/MACH climb profile, or by the DES label when
following a vertical descent profile of –2000 ft/min.
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