The medical examiner mentioned duct tape as one reason she ruled Legal_rulings the death a homicide , but officially listed it as `` death Death by undetermined means '' .

On 28 July 2013 , the train 's driver Francisco José Garzón Amo was charged Judgment_communication with 79 counts of homicide by professional recklessness and an undetermined number of counts of causing injury Bodily_harm by professional recklessness .

The Civil Aeronautics Board determined Deciding that the probable cause Causation of the accident was that the pilot , for undetermined reasons , deviated Change from departure course into an area of rising Cause_change_of_position_on_a_scale terrain , where downdraft activity and turbulence affected Influence the ability of the craft to climb Self_motion .