Learjet 60 - Control Wheel Master Switches - Autopilot Function

Pilot's
Manual
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Learjet 60
Go-Around - The
go-around (GA) mode is a
flight director only
mode and is selected
by depressing the
GO-AROUND button in the
left thrust lever
knob . When GA is selected,
the autopilot will disen-
gage, selected lateral
and vertical modes
will be cancelled, and a
fixed
9°
nose-up, heading hold
steering command
will be presented on the
PFD .
FCP ANNUNCIATORS
The FCP incorporates
annunciators to provide
the status of the
rud-
der
boost and automatic
pitch trim systems
and an annunciator
to in-
dicate which flight director
is selected .
TRIM (pitch
trim)
-
The red TRIM
annunciator will illuminate
when an
automatic pitch trim failure
has been detected . The
autopilot
cannot be
engaged while the red
TRIM light is illuminated .
If already
engaged
and the light illuminated,
the autopilot
will remain engaged
until manually
disengaged .
RB (rudder boost) -
Two separate RB
annunciators, one green and
one amber, are installed
. Illumination of the
green RB annunciator in-
dicates the rudder boost
system is active .
Illumination of the amber
RB annunciator indicates
a rudder boost system
failure or that the
RUDDER BOOST
switch is off .
LEFT &
RIGHT ARROWS (autopilot
transfer arrows) - The left or
right arrow
illuminates to indicate
which flight director is selected .
When the
autopilot is engaged, the
arrow points to the coupled flight
director
. Both arrows are green .
CONTROL WHEEL MASTER SWITCHES -
AUTOPILOT FUNCTION
The Control Wheel Master Switches
(MSW), located on the outboard
horn of the pilot's and copilot's control
wheels, may be used to disen-
gage the
autopilot . Depressing either the
pilot's or copilot's MSW will
disengage the
autopilot . When the autopilot disengages, the green
light above the
AP
button
on the FCP will extinguish and the autopi-
lot disengage tone
will sound . For a pilot initiated autopilot discon-
nect, the AP annunciation
flashes amber for 5 seconds, then self-
clears . If a monitored disengagement
occurs, the autopilot engage
message flashes amber and will clear only
when the AP or MSW but-
ton is pressed, or the autopilot is re-engaged . When
the autopilot is
disengaged using the MSW, the flight director will remain active and
will display steering information from the flight guidance computer,
if a vertical or lateral mode is selected
.
5- 5 6
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PM-123
Change 2