3D Connexion GNS 530(A) manual ILS Approaches, Waypoint Alert

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.

SECTION 6

PROCEDURES

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 final approach fix, 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 final approach course. When the ILS approach is activated, the GNS 530 automatically switches within 1.2 nm left or right of the final 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.)

190-00181-00 Rev. E GNS 530(A) Pilot’s Guide and Reference 6-25