Garmin GPS 400W,GNC 420W Pilot's Manual & Reference page 103

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.
Billard Muni (Topeka, KS)
VOR or GPS Rwy 22

NOTE: As this manual was being written, the let-
ter/number DME arc names were being replaced
with standard five-letter intersection names. You
may encounter either naming convention for an
approach you select.
When you are cleared for a DME arc approach, you
may do one of the following to intercept the arc:
• Follow a specified radial inbound to intercept the
IAF.
• Fly directly to the IAF at the beginning of the
arc.
• Follow ATC vectors which allow you to intercept
the arc at any point along the arc.
This example is based upon a flight from Hutchin-
son (Kansas) Municipal (KHUT) to Billard Municipal
(KTOP) in Topeka, Kansas. The VOR/DME runway 22
approach will be selected, along with "D258G" as the
IAF.
DO NOT USE
FOR NAVIGATION
5 - PROCEDURES
1. Select Billard Muni (KTOP) as your destination,
via the Direct-To key or as the last waypoint
in a flight plan.
Press the PROC key and select the "VOR 22"
2.
approach. From the transitions window, select
"LEBVY" as the IAF. Also, select "Load?" (or
"Activate?", if already cleared direct to the IAF
for the approach).
3. Within 31 nautical miles of KTOP, the 400W-
series unit will switch from en route mode to
terminal mode and the CDI scale will transition
from 2.0 to 1.0 nautical miles, full scale deflec-
tion.
DME Arc Approach
93