At the time, the Armagnac was one of the largest civil aircraft ever built with a wingspan of almost 50 meters and weight over 77 tonnes. The capacious pressurized cabin (with a near-circular fuselage section with 4.7 m/ 15 ft width and height) was intended for a three tier sleeping compartment configuration which ultimately was not fitted to any of the S.E.2010 versions. The fuselage was left with a good deal of unusable space with only open luggage shelves mounted in the upper fuselage.