Runway incursion and excursion accidents and serious incidents are investigated by the NTSB
and the FAA. Determination of causal and contributing factors will help the airport evaluate
the need for mitigation actions, such as new equipment installations to prevent runway incur-
sions, modifications of airfield layout to avoid confusion and hotspots, or improvements to
runway friction, safety areas, and emergency response. An SRA using the investigation reports
as a resource will assist in the evaluation.