The McDonnell Douglas DC-9-15F, operated on a non-scheduled cargo flight from Bogot  to Mit£, Colombia, with a refueling stop at El Yopal. After an uneventful flight the aircraft landed at El Yopal at 15:51 hours local time. Refueling took place and the aircraft departed for Mit£ at 16:40 hours. The aircraft climbed to the en route altitude of FL290. Bogot  Control then cleared the flight to descend to FL180 and requested to the crew to contact Mit£ Tower. At 17:08 hours the flight crew radioed Mit£ Tower, stating they were descending through FL250 at 80 miles from Mit£. The tower controller then cleared the flight to the traffic pattern altitude of 7000 feet and to expect runway 01 for arrival. Less than a minute later, at FL233, the flight crew heard a sudden loud noise, followed by another loud noise. The aircraft then entered an uncontrolled descent until it impacted terrain, killing all three occupants. The wreckage was found on December 28. PROBABLE CAUSE (translated from Spanish): Breakage and detachment of a structural part of the aircraft for unspecified reasons, which caused the pilots to completely lose control of the aircraft, which fell from 23,300 feet to hit the ground.