Wait...Avianca El Salvador? Isn't Avianca a Columbian company? How is Avianca different from Avianca El Salvador, Avianca Peru, Avianca Costa Rica, Avianca Ecuador, and the other Avianca companies based in different countries. How is it that a Brazilian company called Synergy Group can have 11 different airlines, most of which hold US DOT authorization, and only one of which is based in Brazil, and not incur the 'Flag of Convenience' charge from ALPA?