To measure, input for instrument calibration, and record, on an aircraft to be flight-tested, a true airspeed necessary for the positional error calibration of a barometric altimeter and an airspeed meter of an aircraft and a wind direction and a wind velocity at an altitude where a flight test is performed.

This positional error calibration device comprises a calculation part for calculating true airspeed, wind direction, and wind velocity from a nose direction from an attitude angle meter, ground speed, and airspeed, a recording meter for recording output values from the calculation part, an attitude indicating device and an attitude holding device for indicating and holding a nose direction with the nose direction and output values from the calculation part, a speed indicating device and a speed holding device for indicating and holding the airspeed with the airspeed and the output values from the calculation part, a barometric altitude indicating device and a barometric altitude holding device for indicating and holding the barometric altitude with the barometric altitude and the output values from the calculation part, and an altitude holding device for holding the altitude with the terrain clearance and the output values from the barometric altitude holding device.