Cessna SkyHawk SP 172S NAV III 2005 Pilot Operating Handbook page 362

CESSNA
MODEL 172S NAV III
SECTION 9 - SUPPLEMENTS
SUPPLEMENT 3
NORMAL PROCEDURES
(Continued)
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NAVIGATION (NAV) MODE OPERATION
The KAP 140 Autopilot will operate in NAV mode using GPS or
VHF (VOR or LOC) navigation signal inputs. The G1000 HSI
shows the GPS, NAV 1 or NAV 2 navigation signal being supplied
to the autopilot. The navigation source selection shown on the HSI
is made using the COl softkey.
If using NAV 1 or NAV 2, make sure that the radio is adjusted to the
correct frequency and is the active frequency. Make sure that NAV
1 or NAV 2, as applicable, is shown on the HSI.
WARNING
WHEN THE KAP 140 AUTOPILOT IS ENGAGED IN
NAV, APR OR REV OPERATING MODE, IF THE
HSI NAVIGATION SOURCE IS CHANGED FROM
GPS TO NAV1, AUTOMATICALLY OR MANUALLY
(USING THE CDI SOFTKEY), OR MANUALLY
FROM NAV2 TO GPS, THE CHANGE WILL
INTERRUPT THE SIGNAL TO THE AUTOPILOT
AND CAUSE THE AUTOPILOT TO GO BACK TO
ROL MODE OPERATION. NO WARNING CHIME
OR PFD ANNUNCIATION WILL BE SUPPLIED.
THE PREVIOUSLY-SELECTED MODE SYMBOL
SHOWN ON THE FACE OF THE AUTOPILOT WILL
FLASH TO SHOW THE CHANGE TO ROL MODE
OPERATION. IN ROL MODE, THE AUTOPILOT
WILL ONLY KEEP THE WINGS LEVEL AND WILL
NOT CORRECT THE AIRPLANE HEADING OR
COURSE. SET THE HOG BUG TO THE CORRECT
HEADING AND SELECT THE CORRECT
NAVIGATION SOURCE ON THE HSI USING THE
CDI SOFTKEY BEFORE ENGAGING THE
AUTOPILOT IN ANY OTHER OPERATING MODE.
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FAA APPROVED
172SPHAUS-S3-00
U.S. S3-33