A UPS cargo plane from California made an emergency landing at the Chicago Rockford International Airport late Wednesday.
The flight, which originated from Ontario, east of Los Angeles, was on its way to Louisville, Kentucky when the pilot put it down in Rockford at about 11 p.m. because a problem with the aircraft's hydraulics, company spokesman Mike Mangeot told NBC Chicago.
"Out of an abundance of caution the pilot declared an emergency and the plane landed without incident," he said.
Four crew members were on board, but none were injured.
The packages on board the aircraft were unloaded and put on another plane for delivery. The plane was examined by company mechanics.
UPS maintains a regional hub at the Rockford airport.
