Prior to the development of GPWS there were an average of over 10 CFIT crashes a year, since the U.S. Federal Aviation Administration required large airplanes to carry such equipment in 1974, the number of CFIT accidents have reduced significantly.
Prior to the development of GPWS there were an average of over 10 CFIT crashes a year. Since the U.S. Federal Aviation Administration required large airplanes to carry such equipment in 1974, the number of CFIT accidents have reduced significantly.