mark rosenker is the former head of the n.t.s.b. >> these are very deadly accidents. that's why when you can use this kind of technology to prevent them from happening, it is a simple decision to go out and install it. >> reporter: starting in 2020, all general aviation aircraft will have to have new technology to better communicate with air traffic controllers, but, scott, those systems stop short of being dedicated collision avoidance. >> pelley: kris van cleave for us tonight. kris, thank you. coming up next on the "cbs evening news," jon stewart's first interview since the election. first interview since the election. plan insured through unitedhealthcare. it features $0 co-pays, low monthly premiums, and the convenience of walgreens. open enrollment ends december 7th.