In mid-1988, Airbus engineers led by Jean Roeder began work in secret on the development of an ultra-high-capacity airliner (UHCA), both to complete its own range of products and to break the dominance that Boeing had enjoyed in this market segment since the early 1970s with its 747. McDonnell Douglas unsuccessfully offered its smaller, double-deck MD-12 concept for sale. Lockheed was exploring a Very Large Subsonic Transport. Roeder was given approval for further evaluations of the UHCA after a formal presentation to the President and CEO in June 1990. The megaproject was announced at the 1990 Farnborough Airshow, with the stated goal of 15% lower operating costs than the 747-400. Airbus organised four teams of designers, one from each of its partners (Aérospatiale, British Aerospace, Deutsche Aerospace AG, CASA) to propose new technologies for its future aircraft designs. The designs were presented in 1992 and the most competitive designs were used.