Piper cherokee WARRIOR - Page 40

CHEROKEE WARRIOR
c. INSTALLATION
OF PIPER
AUTOCONTROL
lrr AND/OR AUTOCONTROL
IIIB
I.
LIMITATIONS
a.
Autopilot OFF
during
takeoff and
landing.
b. Autopilot
use
prohibited
above 140 MPH CAS.
2. PROCEDURES
a.
PREFLIGHT
(l)
Roll
Section
(a)
Place Radio
Coupler in
"Heading"
mode
and
place
A/P
ON/OFF
switch
in
the
"ON"
position
to
engage roll section.
Rotate
roll
command
knob Left
and
Right
and
observe
control
wheel
describes
a corresponding
Left
and
Right
turn. then center knob.
(b)
Set
proper
D.G. Heading
or1
D.G.
and turn
Heading
lndice
to aircraft heading. Engage
"Heading"
mode switch and
rotate Heading
lndice right and letl. Aircraft
control
wheel
should
turn
same
direction as lndice.
While
D.G. indice
is
set for
a
left
turn,
grasp
control
wheel
and
override
the
servo
to the right.
Repeat
in opposite
direction
for
right
turn.
(c)
If
VOR
signal
available check
Omni mode on Radio
Coupler
by swinging Omni needle left
and right
slowly.
Observe that
control
wheel
rotates in direction of needle movement.
(d)
Disengage
by
placing
the A/P ON/OFF
switch to the
"OFF"
position.
b.
IN-FLIGHT
(
l) Trim
airplane
(ball
centered).
(2)
Check
air
pressure
or vacuum
to ascertain that the Directional Gyro
and Attitude Gyro
are receiving sufficient
air.
(3)
Roll Section
(a)
To
engage,
center
Roll
Command
Knob,
place
the
A/P
ON/OFF
switch tcl the
"ON" position.
To turn rotate roll
command knob
in
desired direction.
(Maximum
angle
of
bank should not exceed
30o.)
(b)
For heading
mode, set
Directional
Gyro with Magnetic
Compass. Push
directional
gyro
HDG knob
in, rotate to
aircraft
heading.
Place
the console
HDG
ON/OFF
switch to
the
"ON" position.
To select
a
new
aircraft
heading,
push
D.G.
heading knob
IN
and
rotate, in desired
direction
of
turn, to the desired heading.
NOTE
In HDG
mode the maximum
bank
angles are
limited
to
approximately 20"
and
single
command. heading
changes
should
be limited
to
150'.
(flDG
lndice not
more
than 150o
from
actual aircraft
heading.)
FAA
APPROVED
JUNE
14,1974
REVISED:
JANUARY
17.
197 5
REPORT: VB-573
PAGE
3-17
MODEL:
PA-28-151