Cessna 172S Pilot Operating Handbook page 174

S ECTION 9 SUPPLEMENTS
-
SU PPLEMENT 1 9
TURN
DISABLED FOR FAF WAYPOINTS AND THOSE
USED EXCLUSIVELY
OVERFLI G HT IS REQUIRED.
SHARED B ETWEEN DP/STARS AND PUBLISHED
EN R OUTE
OVE RFLIG HT
SELECTION O N THE PRESENTED WAYPOINT
PAGE IS NECESSARY TO PROVIDE ADEQUATE
ROUTE P ROTECTION ON THE DP/STARS.
3. GPS APPROACH (GPS, APR) SWITCH -- Pressing the G PS
APPROACH switch manually selects or disarms the approach
ARM mode and also cancels the approach ACTV mode after
being automatically engaged by the KLN 94 G PS system .
The white background color o f the G PS APPROACH
annunciator makes it visible in daylight.
4. ARM ANNUNCIATOR
illuminate when the KLN 94 G PS system automatically selects
the approach ARM mode or when the approach ARM m ode is
manually selected.
automatically selected when the airplane is within 30 N M of an
airport, and an approach is loaded in the flight plan for that
airport. The approach ARM mode can manually be selected
at a greater distance than 30 NM from the airport by pressing
the G P8 APPROACH switch; however, this will not change the
COl scale u ntil the airplane reaches the 30 N M point.
approach ARM mode can also be disarmed by pressing the
G PS APPROACH switch.
5. ACTIVE (ACTV) ANNU NCIATOR LIGHT
will illuminate when the KLN 94 G PS system automatically
engages the approach ACTV mode (the ACTV mode can only
be engaged by the KLN 94 G PS system which is automatic.)
To cancel the approach ACTV mode, press the G PS
APPROACH switch; this will change the mode to the approach
....
ARM mode and illuminate the ARM annunciator.
Figure 1 . GPS Annunciator/Switch (Serials 1 72S8372 thru
FAA APPROVE D
-
A
WARN I NG
ANTIC IPATION
I N
SEGMENTS
I N THE
LI GHT --
The approach ARM mode will be
1 72S8703) (Sheet 2 of 3)
IS AUTOMATICALLY
DP/STARS WHERE
FOR WAYPOINTS
(REQUIRING
DP/STARS), PROPER
annunciator will
ARM
ACTV ann unciator
--
C ESSNA
MODEL 1 728
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