LaGuardia plane crash live updates: Runway safety system ‘did not generate an alert’ for air-traffic controllers before fatal collision

National Transportation Safety Board chair Jennifer Homendy said Tuesday that a critical safety system failed to alert controllers before the fatal crash at LaGuardia Airport.

According to Homendy, the Airport Surface Detection Equipment did not trigger an alarm because the Port Authority fire truck involved lacked a transponder, leaving the system unable to create a “track of high confidence.”