A United Airlines flight was clipped by another plane while taxiing at Chicago's O'Hare Airport Wednesday morning. According to the FAA, the American Airlines Flight 1979 hit the tail of United Airlines Flight 219 while taxiing on different taxiways around 9:50 a.

A plane wheel well is a compartment in the wings or fuselage where the landing gear is stored when not in use. It is a hazardous location for stowaways, who could encounter low oxygen levels, hypothermia, crushing, or the risk of falling during the flight.