NTSB probes collision avoidance technology, safety systems in final day of midair collision investigative hearings

The National Transportation Safety Board questioned witnesses Friday on collision avoidance technology and organizational systems to manage risk. It is the third and final day of investigative hearings probing January’s midair collision between a US Army Black Hawk helicopter and an American Airlines regional jet, operated by PSA airlines.

​ The National Transportation Safety Board questioned witnesses Friday on collision avoidance technology and organizational systems to manage risk. It is the third and final day of investigative hearings probing January’s midair collision between a US Army Black Hawk helicopter and an American Airlines regional jet, operated by PSA airlines. Read More Breaking News, Latest News and Videos | CNN