Cessna Citation 550, Butler, Pa., Jan. 24, 2007–The NTSB has released more information about the Citation 550 that ran off the runway while landing at Butler County Airport in Pennsylvania. The copilot was flying the medical flight from the left seat. Aside from a problem with the autopilot’s altitude hold, which oscillated around the selected altitude, the ATP-rated pilot and copilot reported normal flight. The airplane was cleared for the ILS approach to Runway 8.
The copilot was hand flying and reported that the approach speed was 106 knots, “a little fast,” and she reduced power to slow down. The pilot estimated that they “broke out” of the clouds about two miles from the runway. On rollout, they felt that the airplane was not decelerating, but there was not enough runway remaining to abort.
The airplane rolled off the end of the runway and struck a wooden localizer
antenna platform and the airport fence, coming to rest about 400 feet from the end of the runway. Two people on board were slightly injured, and the airplane was substantially damaged.