The NTSB has released preliminary information in a May 21, 2009 incident involving a TAM Airbus A330, the same type of aircraft that crashed into the Atlantic on June 1. The TAM Airlines A330 (PT-MVB) experienced a loss of speed and altitude information while it was in cruise mode, flying from Miami to Sao Paulo, Brazil. There were no injuries. TAM Flight 8091 from Miami International to Sao Paulo Guarulhos International experienced a loss of primary speed and altitude information while in cruise flight at FL370.  Initial reports indicated that the flight crew noted an abrupt drop in outside air temperature and observed St. Elmo's Fire, followed by the loss of the Air Data Reference System, disconnections of autopilot and autothrust, and loss of primary airspeed and altitude. The flight crew continued using backup instruments, and after approximately five minutes, primary data was restored. The airplane remained in alternate flight law and displayed a rudder travel limit flag. The crew determined they could not restore normal law and continued the flight under the appropriate procedures. The flight landed at Sao Paulo with no further incident and there were no injuries or damage.