The furious dispute over what caused Air India flight 171 to crash
BBC News ·
Other parties, including the country where the aircraft or its engines were built, can also take an active part as "accredited representatives". …
Other parties, including the country where the aircraft or its engines were built, can also take an active part as "accredited representatives". In the case of AI171, that means the US National Transportation Safety Board (NTSB). The NTSB sent a delegation which included technical experts from Boeing, which made the plane itself and GE Aerospace, which built the engines, as well as the US aviation regulator, the Federal Aviation Administration.
Original source: BBC News