Four people have been hospitalized after a seaplane tipped while trying to take off from a water base at the E-A-A AirVenture show in Oshkosh. Winnebago County sheriff’s deputies say three people from Minnesota were aboard the craft — one escaped while two others were trapped and later rescued — and an emergency responder was the fourth person hurt. No names were released but officials say two of the four people were in critical condition at last word. Witnesses say the Lake Renegade amphibious craft was just rising from Lake Winnebago when it tipped and crashed in choppy waters around eight Thursday night. The F-A-A and the National Transportation Safety Board are investigating.