from the aircraft exceeds anything from the other transport industries. >> reporter: mike karn of the coalition of airline pilots association says cameras would be intrusive. why not put cameras in the cockpit of commercial airliners? >> i want to pilot worried about flying the aircraft. the second thing is current technology allows you to monitor so many more parameters of the aircraft that it's not necessary. you're going to know the altitude, speed, configuration, everything mechanically about that aircraft. >> reporter: in 2000, the national transportation safety board recommended the federal aviation administration require airlines to record electronic images, data that would be included in two redundant cockpit data recorders, one in the front of the plane, another in the rear. but in the last 14 years, that recommendation has gone nowhere beyond being a suggestion. >> this information would be limited to accident investigation use and otherwise would not be available for viewing by anyone. >> reporter: jim hall was chairman of the ntsb when the