bradley said the survivors of the crash scene .
 
phoenix ( ap ) — a tour helicopter carrying seven people on board crashed in the grand canyon , killing three people and injuring four others .
six passengers and a pilot were on board the papillion grand canyon in 2001 .
he said flying in the grand canyon can be treacherous simply because of the number of helicopters there .
an after - hours phone call and email to papillion were not immediately returned saturday .
passengers becky dobson , 27 , jason hill , 32 , and jennifer barham , 39 , according to a news release .
 
three other passengers and the pilot were injured .