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 situational awareness before intercepting final and provides guidance on the missed. We still fly the final approach course using the ground-based nav.
