[.041 Safety Wire]

(DOD) The speed of an aircraft relative to its surrounding air mass. The unqualified term "airspeed" can mean any one of the following. a. calibrated airspeed--Indicated airspeed corrected for instrument installation error. b. equivalent airspeed--Calibrated airspeed corrected for compressibility error. c. indicated airspeed--The airspeed shown by an airspeed indicator. d. true airspeed--Equivalent airspeed corrected for error due to air density (altitude and temperature).

Do you see anything in the above statement about headwind or tailwind, This is the Department of Defense definition of airspeed.