According to US media reports on the 18th, on the 17th, at O'Hare Airport in Chicago, Illinois, two United Airlines passenger planes collided on the ground. No one was injured in the accident.

According to information released by United Airlines, one passenger plane crashed its wings with the horizontal tail wing of another passenger plane in a stationary state while sliding to the corridor bridge. On the two passenger planes, one carried 113 passengers and 5 crew members, and the other passenger plane had no passengers.