The U.S. Air Force on June 23 temporarily halted flights at a Florida air base of 26 F-35A fighter jets built by Lockheed Martin Corp after a jet caught fire as it was preparing to take off for a training flight, a Pentagon spokesman said.

The pilot aborted the takeoff and was not injured, said Joe DellaVedova, spokesman for the Pentagon’s F-35 program office. He had no immediate details on the cause of the fire or extent of the damage to the F-35 conventional takeoff model.

The fire occurred in the rear part of the plane where the engine is located, but it was unclear whether the engine was involved. Engine maker Pratt  Whitney, a unit of United Technologies Corp, said it was aware of the incident and stood ready to assist in the Air Force investigation. […]