On January 30, 2003, at 2150 central standard time, a Beech 200, N208F, registered to and operated by Air Transportation LLC, as a 14 CFR Part 91 positioning flight, main landing gear collapsed on landing rollout at Jackson International Airport in Jackson, Mississippi. Visual meteorological conditions prevailed and no flight plan was filed. The airplane sustained substantial damage and the airline transport rated pilot reported no injuries. The flight originated from Jackson International Airport, Jackson, Mississippi, at 2145 on January 30, 2003. The pilot informed the controller after takeoff that he had an unsafe landing gear light on initial climb out. He departed the airport traffic area to conduct the abnormal emergency procedures, which were uneventful. The pilot requested to fly by the tower to see if the landing gear was down. The controller informed the pilot during the fly by that the landing gear appeared to be down. The pilot entered the traffic pattern for a visual approach to runway 16L. On touchdown the left and right main landing gear collapsed. Examination of the airplane revealed that the left main landing gear was partially extended about 12 inches below the landing gear wheel well. The right main landing gear was partially extended 8-inches below the landing gear wheel well and the nose gear was extended, but not in the locked position. The left and right flaps were damaged, and the propeller blade tips were curled aft. The aft fuselage bulkhead was ground down to the rivet line. Examination of the landing gear system revealed the landing gear was found to be in rig with no problems that would cause a malfunction. The landing gear motor, gearbox, electrical wiring and nose gear actuator were inspected and no anomalies were noted. The left and right landing gear actuators were removed and forwarded to the manufacturer through the Federal Aviation Administration for further examination. The examination of both actuators also revealed no anomalies. The airplane was released to the Aircraft Manager of Air Transportation LLC on February 4, 2003. The left and right landing gear actuators were released to the Aircraft Manager for Air Transportation LLC on May 6, 2003.