Apollo 50, 55, 60, 65 Approach Basics (GX50/60), En Route

Approach Basics (GX50/60)

Approach Basics (GX50/60)

The Apollo GX50/60 may be used to navigate GPS non-precision approaches. These consist of overlay approaches, GPS approaches which overlay an existing non-precision approach procedure such as a VOR, an RNAV, or an NDB approach, and GPS-only approaches. GPS approaches may overlay any type of non-precision approach procedure except for localizer, LDA, and SDF approaches.

GPS approaches may be either Phase II or Phase III overlay, or named GPS-only approaches. The major difference in the overlay approaches is that for a Phase

IIapproach, the underlying approach NavAid(s) must be operating and the aircraft must be equipped for the underlying approach. It is not necessary to monitor the underlying NavAid(s). A Phase III GPS approach may be conducted even if the underlying NavAid(s) are not operating.

Introduction There are three general areas of operation (see the diagram on page 3): En Route, Approach Transition, and Approach Active.

En Route

En route operations describe what you do to set up your approach information before you are within 30 nm of destination airport and prior to enabling your approach. Load your approach to the active flight plan. You can load the approach in the Flight Plan function, or as a short cut, press SEL in the Nav function or while viewing the moving map. At 30 nm your Apollo GX will ask if you want to enable approach, press the ENTER button. Then, enter the local altimeter setting. If you are less than 30 nm from your destination when you load an approach, you will be prompted immediately to enable it.

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