On October 20, 2011, an accident occurred involving a Boeing 737-8AS, registration EI-DPA, in Faro, Portugal. The Air Accident Investigation Unit (AAIU) of Ireland is the lead agency for the investigation.
Under the provisions of ICAO Annex 13, the NTSB appointed a U.S. Accredited Representative to assist the AAIU in its investigation, acting as the State of Manufacturer and Design for the aircraft.