Not all approaches in the database are approved for GPS use. As the pilot selects an approach, a ‘GPS’ designation to the right of the procedure name indicates the procedure can be flown using the GPS receiver. Some procedures do not have this designation, meaning the GPS receiver may be used for supplemental navigation guidance only. ILS approaches, for example, must be flown by tuning the VLOC receiver to the proper frequency and coupling the VLOC receiver to the external CDI (or HSI).
A selected approach may be activated or loaded. Once an approach is selected, it may be activated for navigation from the Procedures Page. Activating the approach overrides the ‘enroute’ portion of the active flight plan, proceeding directly to the ‘approach’ portion (for a full approach, directly to the initial approach fix). Activating the approach also initiates automatic CDI scaling transition as the approach progresses.
In many cases, it may be easiest to ‘Load’ the full approach while still some distance away, enroute to the destination airport. Later, if vectored to final, use the following steps to select ‘Activate Vector-To-Final’—which makes the inbound course to the final approach fix (FAF) waypoint active. Otherwise, activate the full approach using the ’Activate Approach?’ option.
to aCtivate aN appRoaCh
1) With an approach loaded in the active flight plan, press the PROC Key to display the Procedures Page.
2) Turn the large right knob to highlight ‘Activate Approach?’ and press the ENT Key.
to aCtivate the appRoaCh with
veCtoRS to fiNaL
1) With an approach loaded in the active flight plan, press the PROC Key to display the Procedures Page.
2) Turn the large right knob to highlight ‘Activate Vector-To-Final?’ and press the ENT Key.
GUideLiNeS foR fLyiNG aN appRoaCh
Due to the variety of available approach procedures, the specific steps required will vary according to the approach selected. Keep the following general guidelines in mind while flying the approach:
. The pilot will typically select the destination airport
as the last waypoint in the active flight plan or using the Direct-to Key. Doing so ensures that the desired waypoint will automatically appear when choosing the ‘Select Approach?’ option from the Procedures Page. (Otherwise, first choose the airport, then the approach procedure.)
. When a localizer-based approach (such as an ILS)
is loaded, the desired frequency is automatically placed in standby on the VLOC window. To activate the frequency, press the VLOC Flip-flop Key.
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