The engine of an American Airlines Group Inc jet caught fire seconds from takeoff at Chicago's O'Hare International Airport on Friday, prompting the crew to abort its departure and evacuate passengers via emergency chutes, authorities said. No serious injuries were reported in the incident, which occurred hours before an unrelated mishap in Fort Lauderdale, Florida, where the landing gear of a FedEx Corp cargo plane collapsed on touchdown, sparking a fire that was quickly extinguished. The company later said the FedEx pilots were safe.