The operation was criticised Judgment_communication for its poor planning and execution , insufficient preparation , reconnaissance Scrutiny and training Education_teaching , and inappropriate command Control and control Research methods applied by the Sisak Operational Group in charge of the offensive .

The report Reporting mentioned as contributory factors the inappropriate pairing Cause_to_amalgamate of flight crews , inadequate command Control training and checking Scrutiny , and inadequate oversight of the charter Renting operation Arranging by the operator and the operator 's state .

A subsequent investigation Criminal_investigation by the Chinese authorities found Know that the plant had been lacking many major safety features and was severely below regulation benchmarks , with the direct cause Causation of the accident Catastrophe being attributed Causation to inappropriate use Using of substandard equipment .