Piper CHEROKEE ARCHER II Pilot Operating Handbook page 160

PIPER
AIRCRAFT CORPORATION
PA-28-I81, CHEROKEE ARCHER
II
SECTION
9
SUPPLEMENTS
SUPPLEIVIENT 3
AUTOCONTROL
IIIB AUTOPILOT INSTALLATION
SECTION
I
. GENERAL
This supplement
supplies
information necessary
for
the operation
of the airplane when the optional
piper
Ar-rtoC^ontrot
IiIB
Autopilot
is installed. The information contained
within this
supplement is to
be
,r.d "",
described" in conjunction
with the complete handbook'
This supplement has been
"FAA
Approved"
as
a
perrnanent
part of this handbook
and
must remain in
th.is
handbook at all times when the optional Piper AutoControl
IIIB Autopilot
is
installed.
SECTION
2.
LIMITATIONS
(a)
Autopilot
use
prohibited above
149
KIAS'
(b)
Autopilot "OFF" during takeoff and landing'
3
- EMERGENCY OPERATION
In
an
emergency
the AutoControl
IIIB
can
be disconnected
by:
(
l)
Pushing
the
roll ONOFF Rocker Switch
"OFF."
(2)
Pulling the
Autopilot Circuit Breaker.
The autopilot can be overpowered
at either control wheel.
An
autopilot runaway,
wittr
a
3
second
delay
in the
in^itiation
of recovery while operating
in
a
climb,
cruise
or
descending
flight, could result
in
a
45'
bank and
180'altitude
loss.
Maximum
altitude loss measured
at
149
KTS in
a
descent.
(d)
An
autopilot runaway, with a
I
second
delay
in the initiation
of
recovery, during an approach
operation, coupled or uncoupled, could result in a
l8o bank and
l0'altitude
loss'
SECTION
4.
NORMAL PROCEDURES
PREFLIGHT
SECTION
(a)
(b)
(c)
(a)
AUTOPILOT
(l)
Place
Radio Coupler
in "HDG"
Mode
(if
installed) and
place the AP
"ON{FF"
switchto
the
"ON"
position
to
engage
roll section. Rotate
roll
comrnand
knob
left
and
right
and
observe
that control wheel describes
a coresponding
left
and
right turn, then center knob.
(2)
Set
correct
compass
heading
on D.G. and
tum
HDG bug to aircraft heading.
Engage
"HDG"
mode rocker so,itch and rotate HGD bug
right
and
left. Aircraft control
wheel should
turn
same
direction
as
bug. Grasp
control wheel and
manually override
servo,
both
directions.
REPORT: VB-790
9-9
ISSUED: JUNE 18, 1976