The Airbus A330/A340 family of aircraft has established significant market leadership in the 240-380 seat category. The five twin or four-engine aircraft, including the A340 -500 and -600 models, offer the highest degree of operational flexibility and economy combined with unmatched passenger comfort. Selected as a key supplier, Eaton's Aerospace business provides the primary and emergency hydraulic power, emergency electric power and flap/slat hydraulic drives for the aircraft.