Garmin GNS 530 User Manual download pdf (Page 107)

GNS 530(A) Pilot’s Guide and Reference

190-00181-00 Rev. H

SECTION 6

PROCEDURES

6-25

Figure 6-59 Waypoint Alert

4) When the OBS Key is pressed, the GNS 530

automatically sequences to each waypoint

along the remainder of the departure route,

including the selected transition.

6.3 ILS APPROACHES

Precision approaches can be performed with the GNS

530’s built-in VLOC (VOR/localizer/glideslope) receivers.

The GPS receiver can be used for guidance prior to

reaching the nal approach x, but once there, the proper

frequency must be selected on the VLOC Window (left

side of screen) and the CDI output set to ‘VLOC’.

The GNS 530 can be set to automatically switch the

external CDI output from GPS to VLOC (Figure 6-60)

as the pilot intercepts the nal approach course. When

the ILS approach is activated, the GNS 530 automatically

switches within 1.2 nm left or right of the nal approach

course. This switch can take place anywhere from 2.0 to

15.0 nm from the FAF.

Figure 6-60 GPS and VLOC Annunciations

Figure 6-61 shows multiple locations along the

approach path and the expected CDI selection: GPS or

VLOC. The automatic switch from GPS to VLOC should

occur within the area of the shaded box.

The automatic switch from GPS to VLOC occurs

gradually to prevent abrupt CDI changes when coupled

to an autopilot. The CDI selection can also be changed

manually by pressing the CDI Key. Once the switch

from GPS to VLOC has occurred, either automatically or

manually, it does not automatically switch again until the

approach is reactivated or another approach is selected.

To prevent automatic ILS CDI selection, choose the

‘Manual’ ILS CDI setting, as described in Section 10.4

‘CDI Scale/Alarms’. (The factory default setting is ‘Auto’,

which enables the automatic switch to VLOC.)

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Garmin GNS 530 User Manual Page 107