Garmin RS-232 GPS Receiver User Manual


 
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3.1.5 NAUTICAL MILES PER GALLON
Nautical miles per gallon is selected by rotating the rotary
switch to the NM/GAL position. The information is shown
on the right display window.
3.1.6 FUEL TO DESTINATION
Fuel to destination is selected by rotating the rotary switch
to the FUEL TO DEST. position. The information is shown
on the right display window and represents the fuel needed
to reach either the active waypoint selected on the Loran-C
(or GPS receiver) or the final destination (if the total
distance record is provided in the serial message.) This
assumes the aircraft ground speed and fuel flow remains
constant and the aircraft remains on flight plan course.
(Readings obtained during climb and descent are invalid.)
3.1.7 FUEL AT DESTINATION
Fuel reserve is selected by rotating the rotary switch to the
F. AT DEST position. The information is shown on the
right display window and represents the fuel that will be
available when the aircraft reaches its destination as
indicated on either the selected waypoint or the final
destination (if the total distance record is provided in the
serial message.) This assumes the aircraft ground speed,
altitude, fuel flow, and direction remain constant. (Readings
obtained during climb and descent are invalid.)