An airplane is operating off an airfield with a QFE of 2309

An airplane is operating off an airfield with a QFE of 23.09\" Hg and a runway temperature of 35 deg C. Find the density altitude.

Solution

the temperature at sea level is 15^oC and runway temperature is 35^oC.

The density altitude is calculated as follows:

     d = pressure altitude + [120 (dT)]

        = 23.09\" Hg + 120(35-15)

convert = 23.09\'\' Hg into feets and solve the above calculation in feets.