Cessna 172R Pilot Operating Handbook page 287

CESSNA
SECTION 9 - SUPPLEMENTS
MODEL 172R
SUPPLEMENT 5 - FAA APPROVED
A WARNING
TURN
ANTICIPATION
IS
AUTOMATICALLY
DISABLED FOR FAF WAYPOINTS AND THOSE
USED EXCLUSIVELY
IN
SID/STARS WHERE
OVERFLIGHT IS REQUIRED.
FOR WAYPOINTS
SHARED
BETWEEN
SID/STARS
AND
PUBLISHED EN ROUTE SEGMENTS (REQUIRING
OVERFLIGHT
IN THE SID/STARS),
PROPER
SELECTION ON THE PRESENTED WAYPOINT
PAGE IS NECESSARY TO PROVIDE ADEQUATE
ROUTE PROTECTION ON THE SID/STARS.
GPS APPROACH (GPS, APR) SWITCH - Pressing the GPS
APPROACH switch manually selects or disarms the approach
ARM mode and also cancels the approach ACTV mode after
being automatically engaged by the KLN 89B GPS
system.
The white
background
color of
the GPS APPROACH
annunciator makes it visible in daylight.
ARM ANNUNCIATOR LIGHT
-
ARM annunciator
will
illuminate when the KLN 89B GPS system
automatically
selects the approach ARM mode or when the approach ARM
mode is manually selected. The approach ARM mode will be
automatically selected when the airplane is within 30 NM
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 GPS APPROACH switch; however, this will not change the
CDI scale until the airplane reaches the 30 NM point.
The
approach ARM mode can also be disarmed by pressing the
GPS APPROACH switch.
ACTIVE (ACTV) ANNUNCIATOR LIGHT - ACTV annunciator
will illuminate when the KLN 89B GPS system automatically
engages the approach ACTV mode (the ACTV mode can only
be engaged by the KLN 89B GPS system which is automatic.)
To cancel
the approach ACTV mode,
press
the GPS
APPROACH switch; this will change the mode to the approach
ARM mode and illuminate the ARM annunciator.
Figure 1. GPS Annunciator/Switch (Sheet 2 of 3)
Dec 2/96
85-7
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