It was determined the airframe split at the cargo door. All three are configured with a large cargo door. The Short Sherpa was a freighter fitted with a full-width rear cargo door/ramp. Long-lead items like flap and cargo door structures started to be built from December 2017. Among items collected were fingerprints from the rear cargo door window of the squad car. It features a large squared fuselage with a full-width rear cargo door/ramp. The "Short Sherpa" was a freighter fitted with a full-width rear cargo door/ramp. Next to this large cargo door is an exit door used by the pilots. The cargo door, however, is not. A large forward cargo door measuring was incorporated. Military cargo aircraft are predominently high-wing designs with a rear cargo door. The front cargo door was attached in December 2017. The cargo door had fractured lengthwise across the center. Manufacturing of its flaps and cargo door had begun in Xian and Shenyang, respectively. Bulk (tube versions) and ULD freighter (large cargo door).