we went to boston to meet dan futrell and isaac stoner, who guys who one day searching the internet founds wick piedia page, a page revealing that just 19 aircraft black boxes worldwide are unaccounted for, including one on bolivia's 21,000-foot mount illimani. never recovered, it said, because of inaccessible terrain. >> so you find this by googling and decide what? we can go find this black box that nobody's found for decades? >> well, dan had to talk me into it, which took a little while. like come on, people have been to the moon, people have been to the top of everest, what does inaccessible mean? and with a couple of google maps and a few videos we thought we can do it. >> trying to reach that eastern airlines jet which crashed into the side of a mountain outside la paz. >> a boeing 727 with 29 on board including eight americans slammed into mt. illimani new year's day 1985. >> the full-scale investigation by inspectors from the national transportation safety board is now under way. >> reporter: but the crash site, so remote and at 19,000 feet above sea level so high that those inve

. >> reporter: it was this wikipedia page about 19 unrecovered black boxes that started dan futrell andr's adventure. >> was it the sense of adventure or was it the mystery that appealed to you? >> i think a little bit of both. maybe we could succeed where all these other expeditions had not managed to. >> reporter: it was a boeing 727 with 29 on board including eight americans that mysteriously slammed into mount illimani on new year's day 1985. but so remote that investigators couldn't get to the site before it was covered in snow. >> i found this thing which is the right color, but cracked open like an egg. >> reporter: dan and isaac found the debris had slid down the mountain, and on the last day of their trek at 16,000 feet with the sun going down isaac finally makes the discovery. >> and so i just flipped over a piece that i hadn't flipped over before that said "ckpt vo rcdr." >> basically the black boxes living in your apartment? >> yeah. >> reporter: strained relations between the u.s. and bolivia have left this box and spool of tape in their apartment. but just this past week t