Garmin GTN 650 STC GTN 6XX/7XX Sample AFMS (DOC file) - Page 10

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 Option Description Route Type Oceanic -For Oceanic/Remote only operations Enroute/Terminal - For all other operations Maximum Allowed Outage This field defaults to 5 minutes when Oceanic is the selected route type. This field is set to default (Time) and "greyed out" (not selectable) when Enroute/Terminal is the selected route type. Ground Speed (Avg) Enter expected average ground speed for flight. Ground Speed Variation 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. Flight Duration 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. Departure Date and Time Enter date and time (in UTC format) of departure, this info can also be entered into the main screen of this program. Selective Availability Simulates Selective Availability conditions when box is checked (normally left unchecked). De-select Satellites Click on the De-select Satellites button to view the Selected Satellites window, see following instructions. Table 5 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 GARMIN WAAS FDE PREDICTION PROGRAM INSTRUCTIONS 190-00643-01 Rev. E 2/28/2011 1:24:35 PM