Garmin GNS 430 Pilot's Manual & Reference

Also see for GNS 430: Specification Pilot's manual Instructions Pilot's guide addendum Pilot's guide addendum

Contents

Garmin GNS 430 Pilot's Manual & Reference Manual pdf 76 page image

68Basic Approach OperationsThe GNS 430 provides non-precision approach guidance using its built-in GPS re-ceiver. The GPS receiver can also be used as a supplemental aid for precision approaches,but the localizer and glideslope receivers MUST be used for primary approach courseguidance.Approaches designed specifically for GPS are often very simple and don’t requireoverflying a VOR or NDB. Currently, many non-precision approaches have “GPS over-lays” to let you fl y an existing procedure (VOR, VOR/DME, NDB, RNAV, etc.) moreaccurately using GPS. To date, there are over 2,400 GPS-only approaches and over 2,900GPS overlay approaches.Many overlay approaches are complex (in comparison to GPS-only approaches). TheGNS 430 displays and guides you through each leg of the approach—automatically se-quencing through each of these legs, up to the missed approach point (MAP). Approachesmay be flown “as published” with the full transition — using any published feeder routeor initial approach fix (IAF) — or may be flown with avectors-to-final transition.Approach operations on the GNS 430 will typically begin with the same basic steps:1. Select the destination airport using the D key, or as the last waypoint in the active flight plan.2. Choose the “Select Approach?” option from the procedures page (see page 66) or from the active flightplan options (see page 61).3. “Load” the approach (often while enroute) in anticipation of its future use. This places the approach in theactive flight plan, but retains course guidance in the enroute section until the approach is “activated”.4. “Activate” the full approach or vectors-to-final, as appropriate. In some scenarios, you may find it moreconvenient to immediately activate the approach and skip the “Load” process outlined above in step #3.The GNS 430 provides both options.Select Destination“Select” and “Load”the approach“Activate” theapproachPROCEDURESBasic ApproachOperations5