Piper SENECA III - Page 360

SECTION 9
PIPER
AIRCRAFT CORPORATION
SUPPLEMENT
17
PA-34-220T,
SENECA
III
SECTION 4
-
NORMAL
PROCEDURES
Refer
to
Edo-Aire
Mitchell Century
21 Autopilot
Operator's
Manual,
P/N
68S805,
dated
1-79 for
Autopilot
Description
and Normal
Operating
Procedures.
(a)
PREFLIGHT
PROCEDURES
NOTE
During
system
functional
check
the
system
must
be
provided
adequate
D.C.
voltage
(12.0
VDC
min.)
and
instrument
air
(4.2
in. Hg.
min.),
lt
is
recommended
that
one
engine
be
operated
(minimum)
to
provide the
necessary
power
and
that
the
-aircraft
be
positioned
in
a
level
attitude,
during the
functional check.
(b)
AUTOPILOT
WITH STANDARD
D,G.
(1)
Engage
autopilot
by
pushing
programmer
OFF-ON
switch
(2)
Rotate
D.G.
HDG bug
left
then
right
and
verify
that
control
wheel
movement
corresponds
to
HDG
command
input.
(3)
Grasp
control
wheel and
override
roll
servo
actuator
to
assure
override
capability.
(4)
With
HDG bug
centered select
N
AV
or
APPR
mode
and
note
control
wheel
movement
toward
VOR
needle
offset.
(5)
Select
REV
mode and
note
control
wheel
movement
opposite
VOR
needle
offset.
(6)
Disengage
autopilot.
(7)
Check
aileron
controls
through
full travel
to
assure
complete
autopilot
disengagement.
(c)
AUTOPILOT
WlTH
COMPASS
SYSTEM (NSD 360A)
(For
other
compass
systems,
refer
to
appropriate
manufacturer's
instructions)
(!)
Check
slaving switch
in slave
or
slave
I
or
2
position,
as
appropriate.
(Slaving
systems
with R.M.L
output
provide
only
slave
and
free
gyro
positions.)
(2)
Rotate
card
to
center
slaving
meter
-
check
HDG displayed
with
magnetic
compass
HDG.
(3)
Perform
standard
VOli
receiver check.
REPORT:
VB-1110
ISSUED:
APRIL
21,.1981
9-110,
4
of
6
REVISED:
FEBRUARY
25,
1982