It is described by true airspeed and true heading.

The loran is showing a lower ground speed than our true airspeed.

The true airspeed is important information for accurate navigation of an aircraft.

I'm working strictly off true airspeed and last known reliable winds.

The true airspeed corresponding to the critical Mach number generally decreases with altitude.

The true airspeed and heading of an aircraft constitute its velocity relative to the atmosphere.

The vector relationship between the true airspeed and the speed with respect to the ground is:

The machmeter is used to show the ratio of true airspeed in relation to the speed of sound.

This error is caused by the air flowing past the static port at a speed different from the aircraft's true airspeed.

This enables computation of static air temperature and true airspeed.