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CESSNA
MODEL
182S
SECTION
9
- SUPPLEMENTS
SUPPLEMENT
19
-
FAA
APPROVED
6.
NAV/GPS SWITCH
--
Toggles from Nav
1
to
GPS and
vice
versa to
control
the type of navigation data
to
be displayed
on
the CDI
(Course Deviation lndicator).
The
No. 1 CDI
Omni
Bearing Selector (OBS) provides analog course input
to
the
KLN 94 in OBS mode when the NAV/GPS
switch/annunciator
is in GPS.
When
the
NAV/GPS switch annunciation
is
in
NAV, GPS course selection
in
OBS mode
is
digital
through
the
use of
the controls and display
at
the
KLN
94.
NOTE
Manual CDI course centering
in OBS
mode using
the
control
knob
can
be
difficult, especially
at
long
distances.
Centering
the
Course Deviation
lndicator
(CDl)
needle
can best be
accomplished
by
pressing the
Direct-To button and
then
manually setting
the
No.
1
CDI course to the course value prescribed in the
KLN
94
displayed message.
NOTE
The Directional lndicator heading (HDG) bug must
also
be
set
to
provide proper
course
datum
to the autopilot
if
coupled
to the
KLN
94
in
LEG
or
OBS.
(When
the
optional HSI
is
installed,
the
HSI course
pointer
provides
course datum
to
the autopilot.)
7.
NAVIGATION SOURCE (NAV) ANNUNCIATOR
-- The
NAV
annunciator
will illuminate steady to inform the pilot that
NAV
1
information
is
being displayed
on
the NAV
1
CDl.
L
NAVIGATION SOURCE (GPS) ANNUNCIATOR
-- The
GPS
annunciator
will illuminate steady to inform the pilot that
GPS
information is being displayed
on
the NAV
1
CDl.
Nov 6/00
Figure
1.
GPS Annunciator/Switch (Sheet
3
of
3)
s19-9
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