 Seamans immediately ordered all Apollo 1 hardware and software impounded , to be released only under control of the board . After thorough stereo photographic documentation of the CM @-@ 012 interior , the board ordered its disassembly using procedures tested by disassembling the identical CM @-@ 014 , and conducted a thorough investigation of every part . The board also reviewed the astronauts ' autopsy results and interviewed witnesses . Seamans sent Webb weekly status reports of the investigation 's progress , and the board issued its final report on April 5 , 1967 . 
