Cessna SkyHawk SP 172S NAV III 2005 Pilot Operating Handbook page 153

SECTION 4
NORMAL PROCEDURES
CESSNA
MODEL 172S NAV III
HOLDING
A
PROCEDURE TURNS AND MISSED
APPROA",HES
(Continued)
The G1000 FMS/GPS treats the procedure turn maneuver as a
flight plan leg and does not suspend (SUSP) flight plan execution at
the IAF waypoint. The G1000 FMS/GPS provides an outbound
heading for the procedure turn and prompts IIBEGIN PROCEDURE
TURN" at approximately one minute beyond the IAF. The pilot must
turn away from the final approach course to start procedure turn
either manually or must select the KAP 140 Autopilot HDG mode
and set the HDG bug on the PFD to command the Autopilot to turn
to the new Following course reversal (inbound to join the
final approach course), the G1000 FMS/GPS sequences to capture
the final approach course. The pilot must intercept and join the final
approach course manually or select the KAP 140 Autopilot APR
mode to enable automatic capture the final approach course.
GPS or RNAV(GPS) approaches are managed by the G1000
FMS/GPS to provide course guidance and waypoint sequencing
through the approach procedure. For ILS approaches, the G1000
FMS/GPS provides course guidance for the KAP 140 to capture the
final approach course. The G1000 will tune the NAV 1 radio to the
applicable facility frequency (with identifier) and set the course
pointer to the final approach course. Within approximately 0.5 nm of
the final approach course, the G1000 FMS/GPS will automatically
change the HSI navigation source from GPS to NAV1. The change
from GPS to NAV1 will make the KAP 140 change from NAV, APR
or APR ARM mode to ROL mode operation and allow the airplane
to fly through the final approach course, if not corrected. The pilot
must manually set APR mode again to make the KAP 140 lock on
the final approach course and the glideslope using the VHF NAV1
signal. If using radar vectors to navigate with the KAP 140 engaged
in HDG mode to the ILS final approach course, wait until the G1000
changes the
HSI
navigation source to NAV1 before the KAP 140 is
set to APR mode to avoid KAP 140 ROL mode reversion.
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U.S.
172SPHAUS-03