DCRefugee,
Review ICAO Annex 13, then get back to us as to having the NTSB, AAIB, BEA takeover. That ain't happenin' due to international treaty.
rigby, is "yuk" a technical term or do you have something specific to say in that paragraph on "official sources"? You do know the legal relationship the US must abide by? If not, read Annex 13, too.