WFDE PREDICTION PROgRAM INSTRuCTIONS
6) To change the departure date, click the down arrow next to the "Date (UTC)" field. A calendar window appears.
Click the left or right arrows to select a different month (if desired), then click the desired date.
7) To change the departure time, click the hours, minutes, or seconds fields next to the "Time (UTC)" field. Click
the up or down arrows (or type in desired time) to change the displayed time.
8) To change the planned route type, average ground speed, ground speed variation, maximum allowed outage,
flight duration, Selective Availability conditions, or to deselect satellites, click the Setup button. A setup window
is displayed (Figure 8). Click the field for the desired item, then enter the desired value. Table 5 describes the
Flight Setup Window options.
Flight Setup Window
Options
Route Type
Maximum Allowed Outage
(Time)
Ground Speed (Avg)
Ground Speed Variation
Flight Duration
Departure Date and Time
Selective Availability
De-select Satellites
NOTE: The maximum allowed outage times for Oceanic flights vary according to the specific route. The pilot
must determine the proper allowed outage time to be used for the prediction, based upon the route that is being
flown.
10
190-00643-01_0E.indd 10
Oceanic -For Oceanic/Remote only operations
Enroute/Terminal - For all other operations
This field defaults to 5 minutes when Oceanic is the selected route type. This field is set to default
and "greyed out" (not selectable) when Enroute/Terminal is the selected route type.
Enter expected average ground speed for flight.
The ground speed variation setting will vary with the selected route type, the default is 100 knots
for Oceanic and 10 knots for Enroute/Terminal route types. The program automatically runs multiple
predictions for a range of ground speeds based on this setting.
This field is calculated from the entered ground speed and route information; or the flight duration
can be entered, and the program will calculate the average ground speed.
Enter date and time (in UTC format) of departure, this info can also be entered into the main screen
of this program.
Simulates Selective Availability conditions when box is checked (normally left unchecked).
Click on the De-select Satellites button to view the Selected Satellites window, see following
instructions.
Table 5
GARMIN WAAS FDE PREDICTION PROGRAM INSTRUCTIONS
Option Description
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