__________________________________________________________________
Page 7-60
Cirrus Perspective™ Line Maintenance Manual
Rev. E
190-00920-00
7.11.2.3
Autopilot
Clutch
Overpower
Check
NOTE
The
GFC
700
uses
electronic
torque
limiting
and
mechanical
slip
clutches
to
limit
the
maximum
servo
effort.
When
the
system
is
on
the
ground,
the
electronic
torque
limiting
is
removed,
allowing
manual
checks
of
the
slip
‐
clutch
settings.
1.
Engage
the
Autopilot
by
pressing
the
AP
key
on
the
GMC
705.
2.
Apply
force
to
the
control
stick
to
determine
if
the
Autopilot
clutches
can
be
overpowered
in
pitch
and
roll.
If
the
Autopilot
clutches
cannot
be
overpowered,
check
the
servo
clutch
torque
settings.
3.
Engage
the
Yaw
Damper
by
pressing
the
YD
button
on
the
GMC
705
(on
aircraft
so
equipped).
4.
Verify
the
ability
to
overpower
the
YD
clutch
by
applying
manual
rudder
inputs
in
both
directions.
7.11.2.4
Autopilot
Operation
Checks
1.
Engage
the
Autopilot
by
pressing
the
AP
key
on
the
GMC
705.
2.
Press
the
HDG
key
on
the
GMC
705
to
synchronize
the
heading
bug
to
the
present
aircraft
heading
on
the
HSI.
3.
Select
Heading
mode
by
pressing
the
HDG
key
on
the
GMC
705.
The
command
bars
should
be
level
and
the
control
stick
should
be
stationary
(very
slow
movement
is
acceptable
due
to
the
aircraft
not
being
perfectly
level).
4.
Turn
the
HDG
knob
to
the
left
and
right
and
check
that
the
command
bars
move
in
the
correct
direction
and
the
control
stick
follows
the
command
bars.
5.
Holding
the
control
stick
lightly,
rotate
the
pitch
command
wheel
UP
on
the
GMC
705
to
increase
the
pitch
reference.
The
command
bars
should
move
up
and
the
control
stick
should
begin
moving
aft.
In
some
aircraft,
the
down
spring
may
require
manual
assistance
to
get
aft
control
stick
movement.
6.
Rotate
the
pitch
command
wheel
DN
on
the
GMC
705.
The
command
bars
should
command
down
and
the
control
stick
should
begin
moving
forward.
7.
Press
the
AP
DISC
switch
to
disconnect
the
Autopilot.
Center
the
pitch
trim
using
the
MEPT
switch.
8.
Engage
the
Autopilot
by
pressing
the
AP
key
on
the
GMC
705.
9.
Command
full
NOSE
UP
or
NOSE
DN
by
rotating
the
control
wheel
on
the
GMC
705
in
the
appropriate
direction.
Hold
the
control
stick
firm
and
watch
for
a
mistrim
annunciation
on
the
PFD.
10.
While
continuing
to
hold
the
control
stick,
press
the
AP
DISC
switch
and
verify
that
the
trim
drives
in
the
same
direction
as
the
commanded
NOSE
UP
or
NOSE
DN
as
shown
by
the
Flight
Director
command
bars
on
the
PFD.
Summary of Contents for Cirrus Perspective SR20
Page 2: ......
