This locomotive was built as CB&Q 9914A and was involved in a collision with a crawler (IHC Model TD-18 TracTracTor weighing 23,945 pounds) that had just slipped off a flat car of a freight train passing in the opposite direction. The collision happened at Downers Grove, Illinois on April 3, 1947. The 9914A was the single locomotive powering Train No. 24 consisting of seven cars and was moving at approximately 70 mph at the point of collision. Upon impact the tractor was destroyed, the rear locomotive coupler was pulled out, the locomotive separated from its train and continued upright for 470 feet before hitting the Downers Grove passenger platform where it turned over on its right side, fatally injuring the Engineer. Meanwhile the passenger cars continued to roll and crashed into the station. Although the locomotive was extensively damaged, it was repaired and returned to service.