A Swearingen SA226-TC Metro II turboprop aircraft was destroyed when it burst into flames after impacting the side of a highway, shortly after takeoff from Quer‚taro Airport (QRO), Mexico. The aircraft operated on a post-maintenance test flight and took off from runway 09 at Quer‚taro Intercontinental Airport at 14:21 hours local time. It was cleared to climb to 12,500 feet towards an area to the west of the airfield. Control was lost after passing an altitude of 9000 feet. The aircraft impacted the side of Highway 57 Quer‚taro-Mexico City close to the TransporMex building, some 11 km southwest of the airport. Probable cause: “Loss of control of the aircraft in flight due to an undetermined cause, however the examination of the wreckage reveals that there was no mechanical failure that could have influenced the normal operation of the aircraft, resulting in impact control of the terrain”. Contributing factors: – Lack of coordination and effective communication between ground staff and flight crew – Lack of adequate supervision of operations by the operator. – Lack of a safety culture of the operator