On March 3, 1991, a United Airlines Boeing 737-200, a scheduled passenger flight from Denver, Colorado, to Colorado Springs, Colorado, crashed during landing in Colorado Springs. Numerous witnesses reported that shortly after completing its turn onto the final approach to runway 35, about 0944 mountain standard time, the airplane rolled steadily to the right and pitched nose down until it reached a nearly vertical attitude before hitting the ground. The airplane was destroyed, and the 25 persons on board were killed. The NTSB determines that the probable cause of the accident was a jammed rudder. The NTSB came to its conclusion only after a similar accident happened in 1994 to USAir flight 427.