The Blériot-SPAD S.56 was a family of French airliners developed in the 1920s as various refinements of the S.33 design.

All S.56 versions shared two new features: the first was a newly designed, all-metal wing, replacing the wooden wing of earlier related designs and the second was a redesigned passenger cabin, replacing the S.33's four single seats in a row with two rows of double seats.

A second access door was also added.

Data from Jane's all the World's Aircraft 1928,[8] Aviafrance: SPAD S.56/4[5]General characteristics Performance

Related development