Occurrences/Hazard events result in or have the potential to cause the loss of operational capabilities, resources, financial, The National Transportation Safety Board (NTSB) sent a team of 20, led by Bill English, to the scene to investigate.[52][28] On July 7, 2013, NTSB investigators recovered the flight data recorder and cockpit voice recorder and transported them to Washington, D.C., for analysis.[78] Additional parties to the investigation include the Federal Aviation Administration, Boeing, Pratt & Whitney, and the Korean Aviation and Railway Accident Investigation Board (ARAIB). ARAIB's technical adviser is Asiana Airlines.[28]
ARAIB tested the pilots for drug use four weeks after the accident; the tests proved negative.