Données préliminaires issues de la notification des autorités de la république d'Afrique du Sud :
The pilot reported that on approach to Vredeford Dome, he experienced a severe downdraft. He elected to execute an emergency autorotation procedure. The pilot reported that during the landing, a severe dust bowl formed and restricted his vision with the NR warning horn sounding. During the process, the pilot overcorrected the helicopter and caused the tail to dig onto the soft soil. The helicopter came to rest on its left side. One of the passengers took out the aircraft equipped hand held Halon fire extinguisher and doused the flames that were coming from the engine exhaust.