Preliminary data based on the notification from the Spanish authorities :
According to the information given by a witness, the pilot had performed 3 circuits taking off and landing on runway 05. At the end of the fourth circuit, he made a low passing above the runway and started a severe climbing, deviating slightly to the right. Shortly afterwards, it veered strongly to the left, apparently intending to return to the runway. During the turn the aircraft fell against the terrain.