Cessna SkyHawk SP 172S NAV III 2005 Pilot Operating Handbook page 128

CESSNA
MODEL 172S NAV
III
DESCENT
(Continued)
SECTION 4
NORMAL PROCEDURES
CAUTION
THE G1000 HSI SHOWS A COURSE DEVIATION
INDICATOR FOR THE SELECTED GPS, NAV 1 OR
NAV 2 NAVIGATION SOURCE. THE G1000 HSI
DOES NOT PROVIDE A WARNING "FLAG" WHEN
A VALID NAVIGATION SIGNAL IS NOT BEING
SUPPLIED TO THE INDICATOR. WHEN A VALID
NAVIGATION SIGNAL IS NOT BEING SUPPLIED,
THE COURSE DEVIATION BAR (D-BAR) PART OF
THE INDICATOR IS NOT SHOWN ON THE HSI
COMPASS CARD. THE MISSING D-BAR IS
CONSIDERED TO BE THE WARNING FLAG.
WARNING
WHEN THE KAP 140 AUTOPILOT IS ENGAGED IN
NAV, APR OR REV OPERATING MODES, 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 NAVIGATION SIGNAL TO THE
AUTOPILOT AND WILL CAUSE THE AUTOPILOT
TO REVERT TO ROLL MODE OPERATION. NO
WARNING CHIME OR PFD ANNUNCIATION WILL
BE PROVIDED. THE PREVIOUSLY SELECTED
MODE SYMBOL SHOWN ON THE AUTOPILOT
DISPLAY WILL BE FLASHING TO SHOW THE
REVERSION TO ROLL MODE OPERATION. IN
ROLL MODE, THE AUTOPILOT WILL ONLY KEEP
THE WINGS LEVEL AND WILL NOT CORRECT
THE AIRPLANE HEADING OR COURSE. SET THE
HDG 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.
(Continued Next Page)
I
172SPHAUS-03
U.S. 4-21