Cessna 172P Pilot's Operating Handbook And Flight Manual page 277

PILOT'S
OPEN,ATING
HANDBOOK
SUPPLEMENT
13
12
FOSTER AN,EA
NAVIGATION
(TYPE
õ11)
9.
Left
\ttIPT
Pushbutton Switch -- PUSH in.
&.
First waypoint
R
ADIAL
and
DISTANCE
are
placed
in unit
as
a
waypoint.
10.
RNAV BEAF,ING Readout
--
OBSERVE readout
for
magnetic
BEAA,ING to waypoint.
11.
RNAV RANGE lleadout --
OBSERVE readout of
first
waypoint
distance.
tP,.
TEST Pushbutton --
PRESS
a,nd
obgerve
that the
desired BEAF,-
ING
and
RANGE readouts
of the
waypoint thumbwhegl eettlngs
are displayed.
4,. BEARING Display
Readout
--
DISPLAYS roadout of
first
b.
waypoint bearing.
RANGE Display
Readout
-- DISPLAYS readout of
first
way-
point
distance.
c.
COURSE
DEVIATION INDICATOR (CDI) -- CDI
needle cen-
ters
and
NAV/ÎO-F
ROM
indicator displays
TO
if
OBS
setting
is at
the value of the radial entered
in the waypoint thi¡mb-
wheels.
DG
or HSI --
CONTROL
AIRCRAFT as required to maintain
desired track to or from waypoint.
NOTE
Due to
wind drift, it may
be
necessary
to
fly
a
few degrees
plus
or
minus
the
calculated BEARING readout
in
order
to
malntaln
the desired
BEARING readout
on
the oomputer.
74.
VOR/DME Pushbutton -- PRESS at
an¡rtime to
observe the
radial
and DME distance
from the
VOF,TAC
a,ssocia,ted
with
the way-
point.
1õ.
Upon Waypoint
Passage
--
CHECK
or
SELECT
next
dosired
waypoint's
VOI1TAC froquoncy on
the
seleated
Nav receiver
and
then PRESS next
WPT
Pushbutton in
and
repeat
steps
9
through
12
to proceed
to next waypoint which was dialed in the right
set
of
thumbwheels.
NOTE
Waypoint
pessage
will
begin
üo
be
reflected on the
RNAV
BEARING display about
1.5
NM
from
the
waypoint.
Way-
point
passago
wÍll
be reflected
by a rapid
change of
BEAF,ING displays. Therefore, the
pilot
should
fty
the
established inbound predeternined
DG
heading until
waypoint
pessa,ge has oocurred or
until
tbo
nextwaypont
is
selected.
7 30
May
1980