Garmin GPS 89 - Manual (Page 44)

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Winds Aloft Fmctlott
The GPS 89i winds aloft functiwi will calculate the wind
direction, speed and head/tail wind conditions for you hy
entering your true air speed and current heading.
To calcúlale winds aloft;
1. Highlight the true airspeed field (TAS) and press A.
2. Enter the TAS (use the den^ altitude function if you do
notltnowTASIand press 4Ш.
3. Press Л to begin entry of your current heading IHdg).
4. Enter your heading and press Ш. The wind direction,
speed and the head/taii wind conditions wiil be dispiayed
at the bottom of the pege.
~Mp and Fnel Flanniim Function
The GPS 89’s trip and fuel planning function will calcu­
late the desired track, distance, estimated time enroute and
fuel requirements between any two waypoints or any pro­
grammed route. The first field (top left of the planning page)
allovra you to select between waypoint or route planning.
To perform a waypoint-to-waypoint trip and fuel plan;
1. Highlight the Waypofrrt/Rte fieid and press Л.
2. Use the arrow keypad to seieetthe Vfaypoiitf option and
press 4Ш. The field highlight will move to the 'fíom' field.
3. Press e to begin selection of the 'From' waypoint
4. Enter the starting waypoint for the trip, or leave the field
blank to start from your preserrt position, and press A.
The field highlight will advance to the To' field.
5. Press Л to begin selection of the To'waypoint
6. Enter the destinafion waypoint and press Л.
7. Press Л to begin entry of the trip speed.
B. Enter the trip speed and press A. The field highlight will
advance to the 'RoW field.
9. Press to begin entry of the fuel flow.
to. Enter the fuel flawfor the trip and press Л . The
desired track (DTK), distance (DIS), fuel requirement
IREQ), and estimated time enroute (ETE) ol the trip wll be
displayed at the bottom of the page.