WingX 2.0 User Manual - FAASafety.gov

Example: If the first time is entered as “1:30:00” and the second is “2.3”, then
WingX adds these together and displays both “3:48:00” and “3.8” as the result.
Times may also be negative thereby allowing the subtraction of times.
Flight/Block Duty Times
Flight/Block Duty times use specific dates and times for Out, Off, On, and In;
i.e. time out the gate, time off the runway, time on the runway, and time in the
gate. Using the differences between Off and On and the difference between
time Out and In, WingX will calculate the Flight and Black times respectively.
Example: The aircraft is out the gate on September 7, 2006 at 11:56pm, off
the runway at 11:58pm. The aircraft lands at 2:23am the following date and is
in the gate at 2:27am. Using this information, WingX calculates the flight and
block times as 2:25:00 (or 2.417) and 2:31:00 (2.517) respectively.
Miscellaneous Sub-page
Wind Chill and Frostbite
While not specifically aviation-related, calculating wind chill and frostbite values can be extremely valuable in
cold climates. Wind chill is defined as “The temperature of windless air that would have the same effect on
exposed human skin as a given combination of wind speed and air temperature.” and is therefore a function of
wind speed and temperature. Frostbite is defined as “Injury or destruction of skin and underlying tissue, most
often that of the nose, ears, fingers, or toes, resulting from prolonged exposure to freezing or subfreezing
temperatures.” and is a function of wind chill and exposure time.
Four Examples: Let’s assume that a cold front has moved through the area and that the METAR on the
Weather page area shows an ambient temperature of -28˚C. Using one of the following wind speeds: 0, 10, 20,
and 35 knots, the severity of the exposure is shown in different colors as seen below.
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