Garmin GNC 420AW GPS Receiver User Manual


 
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156
190-00356-00 Rev E
Flight Planning
OR
3b. For flight plan fuel planning, turn the small
right knob to select the desired flight plan by
number (already stored in memory. “00” is the
active flight plan). Turn the large right knob
to highlight the “LEG” field and turn the small
right knob to select the desired leg of the flight
plan, or select “Cum” to apply fuel planning
calculations to the entire flight plan.
4. If your fuel management system does not enter
the data automatically, turn the large right
knob to highlight the fuel on board (FOB)
field.
5. Use the small and large right knobs to enter
the amount of fuel on board. Press ENT when
finished.
6. The flashing cursor moves to the fuel flow (FF)
field. Use the small and large right knobs
to enter the fuel flow rate. Press ENT when
finished. Note that if a fuel system is providing
current fuel flow, the fuel flow field will default
to this value.
7. The flashing cursor moves to the ground speed
(GS) field. Use the small and large right
knobs to enter the ground speed. Press ENT
when finished.
8. With all variables entered, the following infor-
mation will be provided:
•REQ— Quantityoffuelrequired
•LFOB Left-over fuel on board
•LRES Left-over fuel reserve time
•EFF Efficiency, expressed in distance per
fuel units (e.g. nautical miles per
gallon)
•RNG Range (distance)
•ENDUR Flight endurance, or total available
flight time
9. To reconfigure the data fields press MENU to
display the options window. Turn the small
right knob to highlight the “change fields?”
option. Press ENT to reconfigure the data
fields. Turn the large right knob to select the
desired field. Turn the small right knob to
highlight the desired data. Press ENT to select
the data configuration.