Textron Aviation Cessna 172S NAV III Skyhawk SP, Information Manual

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CESSNA SECTION 4
MODEL 172S NAV III NORMAL PROCEDURES
KAP 140 AUTOPILOT
U.S.
HOLDING, PROCEDURE TURNS AND MISSED
APPROACHES
(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 "BEGIN 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 heading.
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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172SPHAUS-05 4-45
For
Training
Purposes
Only