WingX 2.0 User Manual - FAASafety.gov

Example 1: To determine the density altitude in Reno, there are several pieces
of information required. Firstly, the airport’s altitude is required and Reno’s is
4415’. Secondly, environmental conditions are entered, these include Altimeter
Setting, Temperature and Dew Point. Upon entering “4415” for the field
elevation, 29.87 for the altimeter settings, and 25˚C for the temperature,
WingX determines that the Pressure Altitude is 4,462’ and the Density Altitude
is 6,608’.
In addition to the above-mentioned Pressure Altitude and Density Altitude
calculations, WingX will automatically propagate the Pressure Altitude and
temperature down to the CAS/TAS group box. Therefore, only the
Calibrated Airspeed CAS needs to be entered and WingX will calculate the
True Airspeed (TAS); in our example the calculated TAS was determined to be
“137.3”.
Example 2: WingX allows users to enter the airport’s identifier instead of the field elevation. WingX will
automatically continue to flag the value in red (invalid) as it is not strictly numeric although it will use the
appropriate airport elevation. In this second example, Reno’s identifier “RNO” was entered instead of its field
elevation of “4415” and a dew point value of “12” was used. By using the dew point information WingX is
able to more accurately calculate the Density Altitude. In this example, the Density Altitude rose about 200’. In
addition, WingX calculated the Heat Index (HI) and Relative Humidity (RH) as 26˚C and 44% respectively.
Hint: Use the airport identifier in the “Elevation” field.
Hint: Tap on “˚C” to change to “˚F” and vice versa.
73