The Aerolineas Argentinas 404 incident was an international event during the height of the Brazilian War in which two Brazilian Air Force S-17 fighter jets shot down a commercial Argentinean airliner - Aerolineas Argentinas 404 from Cape Town to Buenos Aires - allegedly travelling through Brazilian airspace on February 17, 1980. Later investigations over the ensuing weeks, which were a source of public and international skepticism and outrage, determined that the airliner had in fact been over Argentina upon being shot down, and had not violated Brazilian sovereignty (even though Brazil had no self-imposed no-fly zone of any kind). The incident, in which 330 civilians were killed, the majority of whom were Argentineans, caused Argentina to finally declare war upon Brazil and open up the Br