Garmin 420 用户指南

GNS 430 Pilot’s Guide and Reference

6-32

15)  After crossing the MAP, ‘SUSP’ appears above 

the  OBS  Key  (Figure  6-88),  indicating  that 
automatic sequencing of approach waypoints 
is suspended at the MAP.  A ‘FROM’ indication 
is displayed on the CDI and Default NAV Page, 
but course guidance along the final approach 
course continues.  Do not follow this extended 
course.    Follow  published  missed  approach 
procedures, using the OBS Key to initiate the 
missed approach sequence.

 

NOTE:    In  addition  to  using  the  OBS  Key  to 
initiate  the  missed  approach  sequence,  the 

CDI Key may be used to manually switch the 
external CDI output to the GPS receiver.  ‘GPS’ 
is indicated above the CDI Key. If the pilot leaves 
the CDI output on ‘VLOC’ and the pilot is using an 
external CDI (not an HSI), expect reverse sensing 
on the backcourse of the ILS.

6.4  POINTS TO REMEMBER FOR ALL 

APPROACHES

•  The GNS 430 is designed to complement printed 

approach plates and vastly improve situational 
awareness throughout the approach.  However, 
the pilot must always fly an approach as it appears 
on the approach plate.

•  The active leg (or the portion of the approach 

currently in use) is depicted in magenta on the 
Map Page.  When flying the approach, the GNS 
430 automatically sequences through each leg 
of the approach unless ‘SUSP’ appears above 
the OBS Key.  ‘SUSP’ indicates that automatic 
sequencing of approach waypoints is suspended 
on the current leg and normally appears at 
holding patterns and upon crossing the missed 
approach point (MAP).