the la martina flyers planes took off just before nightfall from the port of merida en route to man davis internationals academy inside the border province of miami . noel marquez , superintendent of venezuela ' s emergency management office in cartagena , that the plane has failed to contact all tower . civil safety coordinator general antonio camacho told reuters that it is unknown that or not the plane crashed or is directly missing .
a airplane with 46 passengers has not contacted these sites .