Density Alt / Tas / Winds - Garmin GPS 400W,GNC 420W Pilot's Manual & Reference

9 - AUX PAGES
Flight Planning
4. Turn the large right knob to highlight the
departure time (DEP TIME) field.
Use the small and large right knobs to enter
5.
the departure time. Press ENT when finished.
(Departure time may be entered in local or UTC
time, depending upon unit settings.)
6. 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.
7. With all variables entered, the following infor-
mation will be provided:
• DTK— Desired track, or desired course
• DIS— Distance
• ETE— Estimated time en route
• ESA— En route safe altitude
• ETA— Estimated time of arrival
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Density Alt / TAS / Winds

To calculate density altitude, true airspeed, winds
aloft:
1. Select "Density Alt / TAS / Winds" from the
flight planning page.
2. The flashing cursor highlights the indicated alti-
tude (IND ALT) field. Use the small and large
right knobs to enter the altitude indicated on
your altimeter. Press ENT when finished.
3. The flashing cursor moves to the calibrated
airspeed (CAS) field. Use the small and large
right knobs to enter the airspeed from your
airspeed indicator. Press ENT when finished.
4. The flashing cursor moves to the barometric
setting (BARO) field. Use the small and large
right knobs to enter the barometric setting
(altimeter setting). Press ENT when finished.
5. The flashing cursor moves to the total air tem-
perature (TAT) field. Use the small and large
right knobs to enter the temperature. Press
ENT when finished.