Airport spokesman John Wallace says Flight 3518 to Pittsburgh took off from the airport in Windsor Locks at about 11:30 a.m. Monday. He says it was forced to return about 15 to 20 minutes later because of a fire reported in the plane's auxiliary power unit. The plane landed at Bradley without incident shortly after noon.
It wasn't clear if there actually was a fire. Airport officials say there was no fire when the plane landed.
US Airways officials didn't immediately return messages.