On July 18, 2013, an accident occurred involving a Boeing 737-800, registration EI-DWF, in Perugia, Italy. The Air Accident Investigation Unit (AAIU) of Ireland notified the NTSB of the event.
Under the provisions of ICAO Annex 13, the NTSB appointed a U.S. Accredited Representative to support the AAIU investigation in its capacity as the State of Manufacturer and Design.