Clarence 'Kelly' Johnson's design for the Lockheed Constellation, known affectionately as the 'Connie', produced one of the world's most iconic airliners. Lockheed had been working on the L-044 Excalibur, a four-engine, pressurised airliner, since 1937\. In 1939, Trans World Airlines, at the instigation of major stockholder Howard Hughes, requested a 40-passenger transcontinental aircraft with a range of 3,500 miles, well beyond the capabilities of the Excalibur design. TWA's requirements led to the L-049 Constellation, designed by Lockheed engineers including Kelly Johnson and Hall Hibbard. Between 1943 and 1958, Lockheed built 856 Constellations in numerous models at its Burbank, California, factory - all with the same distinctive and immediately recognisable triple-tail design and dolphin-shaped fuselage. The Constellation was used as a civil airliner and as a military and civilian air transport, seeing service in the Berlin and the Biafran airlifts. Three of them served as the
