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PILOT'S OPERATING HANDBOOK
SUPPLEMENT
CESSNA 300A AUTOPILOT
(TYPE AF-395A)
SUPPLEMENT
CESSNA NAVOMATIC
300A AUTOPILOT
(Type AF-395A)
SECTION 1
GENERAL
The
Cessna 300A Navomatic is an all
electric,
single-axis (aileron
control) autopilot system that provides added
lateral and
directional
stability. Components
are
a computer-amplifier, a turn coordinator, a
directional gyro, an aileron actuator and a course deviation indicator(s)
incorporating a localizer reversed
(BC)
indicator
light.
Roll
and
yaw motions
of
the airplane are sensed by
t
he turn coordina-
tor
gyro.
Deviations from the selected heading are sensed by the direction-
al gyro.
The computer-amplifier electronically computes
the
necessary
correction
and
signals the
actuator
to move the
ailerons
to maintain the
airplane
in the commanded lateral attitude or heading.
The
300A Navomatic will
also
intercept and track
a
VOR or
localizer
course
using signals from
a
VHF navigation receiver.
The operating controls for the Cessna 300A Navomatic
are
located on
the
front
panel of the computer-amplifier and on the directional gyro,
·
shown
in Figure
1.
The primary function pushbuttons
(HDG
SEL, NAV
INT
,
and NAV TRK),
are
interlocked so that only one
function
can be
selected at a time. The HI SENS and BACK CRS pushbuttons are not
interlocked so that
either
or both of these functions can be
selected
at any
time.
1
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