Garmin GPS navigators can use either of two databases for en-route and terminal navigation. Both are available through Garmin; one is a Garmin product and Jeppesen provides the other. We naturally assume that the two databases are similar, and in most cases they are-but not always, as I recently learned. Most of us consider it good practice to load ground-based approaches into our navigators. This allows better situ-ational awareness before intercepting final and provides guidance on the missed. We still fly the final approach course using the ground-based nav. Most ILS approaches in the U.S. include the localizer-only approach on the same chart. Suppose for proficiency you want to fly the localizer version. You can load that from Garmin's database, but not from Jeppesen.
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