Cessna 172P - Page 335

PILOT'S
OPEIIATING
HANDBOOK
SUPPLEMENT
19
CESSNA 3OOA'
AUTOPILOT
(TYPE
AF-39õA)
4.
Heading
Selector
Knob
--
ROTATE bug
to selected
course
(VOEI,
or
localizer
- inbound
or outbound
as appropriate).
õ.
Directional
Gyro
--SET for magnetic
heading.
6.
NAV
INT Button
-- PUSH.
7.
HI SENS
Button
--
PUSH
for localizer
and
"close-in" omni inter-
cePts.
L
BÃCK
CRS
Button
-- PUSH
only
if
intercepting
localizer
front
course
outbound
or
back course
inbound.
CAUTION
With
BACK
CRS button
pushed
in
and
localizer
frequency
selected,
the
CDI on
selected
nav
radio will
be reversed
even
when
the autopilot
switch
is OFF.
L
PULL-TURN
Knob
-'PUSH'
NOTE
Airplane
will
automatically
turn
to
a 45o
intercept
angle'
NAV
TR,ACKING
(VOR/I,OC):
1. NAV
TRK Button
--
PUSH
when CDI
centers
(within
one dot)
and
airplane
is within
t 1Oo
of
oourse
heading.
2. HI
SENS
Button
--
Disengage
for enroute
omni
tracking
(loave
engaged
for
localizer).
NOTE
PULL
TURN
knob
and
reintercept
the
course. If deviation
persists,
progressively mako slight
adjustments of the
autopilot
TRIM
control
towards
the course
as required to
maintain
track.
There
is
no change
equipment
is installed.
SECT¡ON
5
PERFORMANCE
to
the airplane
perforrnance
when this
avionic
30
Mey
1980 7/(8 blauk)