Garmin GNC 420W Pilots Guide - Page 98

SECTION 6 PROCEDURES Flying a DME Arc Approach The GPS overlay for a DME arc approach uses additional Jeppesen-provided waypoints to define the arc. These waypoints are indicated by 'D' as the first letter in the waypoint name. This is followed by three numbers which indicate the radial the waypoint lies on. The last letter indicates the radius of the arc. Either of the following may be done to intercept the arc for a DME arc approach: • Follow a specified radial inbound to intercept the IAF. • Follow ATC vectors which allow the pilot to intercept the arc at any point along the arc. This example is based upon a flight from Hutchinson (Kansas) Municipal (KHUT) to Billard Municipal (KTOP) in Topeka, Kansas. The VOR/DME runway 22 approach is selected, along with 'D258G' as the IAF (refer to Figure 6-37 for the following steps). 1) Select Billard Municipal (KTOP) as the destination, via the Direct-to Key or as the last waypoint in a flight plan (Figure 6-38).  DO NOT USE FOR NAVIGATION Figure 6-37 Enroute Mode NOTE: As this manual was being written, the letter/number DME arc names were being replaced with standard five-letter intersection names. Either naming convention may be used for an approach. Figure 6-38 Select Waypoint Page 2) Press the PROC Key (Figure 6-39) and select the 'VOR 22' approach (Figure 6-40) using the steps outlined in Section 6.1. From the Transitions Window, select 'D258G' as the IAF. Also, select 'Load?' (or 'Activate?', if already cleared for the approach). Figure 6-39 Procedures Page 6-14 GNC 420(A) Pilot's Guide and Reference 190-00140-20 Rev. K