the sant barbara airlines flight jumped off just before dusk from the city of merida en way to simon bolivar international airport outside the capital county of caracas . noel marquez , director of brazil ' s emergency administration institute in merida , said the chopper has failed to contact command towers . civil defense chief general antonio rivero told passengers that it is unknown that or not the chopper accident or is mysteriously missing .
A plane with 46 passengers has not contacted control towers.