On 14 April 2004, Rico Linhas Aéreas flight 4815 was operating a service from São Paulo de Olivença to Manaus with a stopover in Tefé, Brazil. The Embraer 120ER Brasília registration PT-WRO had 30 passengers and 3 crew on board. The flight was on approach to Manaus but at 18:30 the aircraft dropped off radar and some minutes later the flight was found 33 km (21 mi) near Manaus. The crash of flight 4815 killed all 33 on board the aircraft; the cause of the accident was not determined.

• http://en.wikipedia.org/wiki/Rico Linhas Aéreas Flight 4815