The Aircraft Accident Investigation Unit (AAIU) of Bulgaria notified the NTSB of an incident involving a Boeing 737, registration TC-JGE, which took place on June 04, 2016, in Sofia, Bulgaria.
As the state of the aircraft's manufacturer, the NTSB appointed a U.S. Accredited Representative to assist the Bulgarian AAIU investigation in accordance with ICAO Annex 13 provisions.