The altimeter of a low-speed Piper Aztec reads 8000ft. A Pitot tube mounted on the wingtip measures a pressure of 1650 lb/ft. If the outside air temperature is 500 deg R, What is the true velocity of the airplane?, What is the equivalent airspeed? @8000 ft (Pressure is standard) P = 1571.9 lb/ft, T given as 500 deg R Pitot tube total pressure = 1650 lb/ft