Engine fire with a UAL B767 last night.
Last night, just after takeoff (from GRU to JFK) a United Boeing 767 had an engine fire alert on number 2 engine. Pilots decided to dump some fuel prior to return to Guarulhos airport. Landing was made without further incident. Passengers declared that since the first part of the flight, from GIG to GRU, some abnormalities occured, with some delay later in GRU, but they didn't know what was happening.
Information obtained from a local network.