Garmin GPS III Pilot - Manual (Page 84)

5. Highlight the ‘Total Air Temperature’ (TAT) field and press ENTER. Enter the TAT and
press ENTER.
NOTE: TAT is the temperature of the air including the heating effect caused by speed.
The temperature reading on a standard outside air temperature gauge found on most
piston aircraft is TAT.
6. The ‘Density Altitude’ and ‘True Airspeed’ figures will appear at the bottom of the page.
To calculate winds aloft:
1. Select the ‘Winds’ file tab, using the rocker keypad.
2. Highlight the ‘Heading’ field and press ENTER. Enter the current aircraft heading and
press ENTER.
3. Highlight the ‘True Airspeed’ field and press ENTER. Enter the current true airspeed
and press ENTER. (If the true airspeed was previously determined on the ‘Density
Altitude’ page, the calculated figure will automatically appear here as the default.)
4. The ‘Head (Tail) Wind’, ‘Wind From’ and ‘Wind Speed’ figures will appear at the bottom
of the page.
Setup— provides a group of pages to perform various system setup functions,
including selection of position format, units of measure, setting various alarms, con-
figuring the display and backlighting. Each available page is denoted by a ‘file tab’
which identifies the function of that page.
To select a Setup option, highlight the file tab for the desired function.
The information is automatically displayed when the file tab is highlighted.
The ‘Winds’ option allows you
to calculate the current head-
wind or tailwind component.
The ‘Setup’ option uses file
tabs for quick selection/review
of unit settings.
76
REFERENCE
Main Menu / Setup
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GPS III Pilot B2 4/1/99 2:02 PM Page 76