Garmin 400 Manual Suplementario

CDI SCALE CHANGE

The GNS 430 will begin a smooth CDI scale transition from the 5.0 nm (enroute/oceanic mode) to the 1.0 nm (terminal 
mode) scale 30 nm from the destination airport (see Figure 2). The CDI scale will further transition to 0.3 nm (approach 
mode) at 2 nm prior to the FAF during an active approach. If you are in a missed approach situation, and would like to 
return the CDI to the 1 nm scale, activate the missed approach sequence by pressing the OBS key.  The CDI scale will also be 
1.0 nm (terminal mode) within 30 nm of the departure airport.

Figure 2.  CDI Scale Transition

SATELLITE STATUS PAGE

The Satellite Status Page in Figure 3 shows satellite number 9 exclusion during oceanic phase of fl ight. No message notifying 
the user of exclusion appears. In addition to the EPE and DOP fi elds, there is the Horizontal Uncertainty Level (HUL) fi eld 
which displays a 99% confi dence level that the aircraft position is within a circle with radius of the value displayed in the 
HUL fi eld.

NAV Terms 

The following acronyms have been added to each of the 400/500 Pilot’s Guides: FDE-Fault Detection and Exclusion; and 
OCN-oceanic.

0.3 nm

30 nm

2 nm

FAF

MAP

1 nm

1 nm

5 nm

1 minute

APPROACH

TERMINAL

ENROUTE/OCEANIC

Excluded Satellite (checked pattern)

Oceanic Mode Annunciation (OCN)

Horizontal Uncertainty Level

Figure 3. Satellite Status Page

190-00181-15  Rev. A