controlled not by the pilots in the cockpit, but by a passenger seated in the cabin. this man, chris roberts, a cyber security consultant tells the fbi he did just that to expose aircraft cyber vulnerabilities. in this affidavit, roberts says he issued a command that "caused one of the airplane engines to climb, resulting in a lateral or sideways movement of the plane." >> absolutely a flight crew would notice extraneous input to their airplane albeit engine controls or flight controls. >> reporter: roberts claims on multiple occasions he reached under one of the passenger seats to what's called a seat electronics box, plugged his laptop's in through an ethernet jack andhacked into the internet system connecting him to the flight and navigation systems. >> the very idea they're making airplanes with these boxes under the seats you can hard wire a cable to is mind-boggling to me. >> reporter: the fbi seized