suggestion. >> this 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 recommendation was made. >> the cameras would focus on the instruments and on the manipulations that were made. >> we see them edging more and more towards infringing on the privacy of pilots. >> i hope we won't want until we have a similar incident involving a united states airline and united states