In February 2000, the 250-seat A330-100 replacement for the A300/A310 could be launched by year end for 2003 deliveries. Shortened and keeping its fly-by-wire cockpit and systems, with a cleaner A300-600 wing with sealed control surfaces and winglets and at least two new engine types among the GE CF6-80, the PW4000 and the A340-500/600's Trent 500 aimed for 5% better SFC than the A300-600. Its wing allowed a MTOW and range. In May, the 210-260 seat design had evolved towards keeping the A330 span wing and engines for a 195 t MTOW and range. Interested customers included Singapore Airlines, Lufthansa and Hapag-Lloyd.