The LeO H-13 was constructed by Lioré et Olivier in Levallois-Perret factory, for an order of the French Aeronavale airlines. The prototype was flown in July 1922. From 1923 23 passenger aircraft were built LeO H-13A.
Next, military variants were developed: reconnaissance-bomber LeO H-13B-3 and trainer LeO H-13E. They differed in fuselage configuration, because the H-13B-3 had an open cockpit for a pilot only behind a lower wing, while the H-13E had an open cockpit for a trainee and instructor seating side-by-side, in front of wings. Both had open machine gun positions in the nose and behind the wings. The H-13E could be also used as a reconnaissance aircraft. From late 1923 20 H-13B-3 were built (nos. 1-20) and 10 H-13E (nos. 21-30).
Passenger H-13A were used over the Mediterranean Sea.
In the French Navy, H-13 were quickly withdrawn for training purpose, because of weak structure and low manufacturing quality.
In 1924-1925 two H-13B3 and two H-13E were sold to Poland and used in Naval Aviation Unit (MDLot) in Puck from mid-1925. One of H-13E was used for a short time in a River Flotilla in Pińsk. The first H-13B-3 no. 1-1 was withdrawn in 1929, next two (nos. 1-2 and 1-3) in 1931, while the last H-13E, no. 1-4, crashed on 29 July 1931 over the land near Puck.
Two-engine biplane flying boat of wooden construction. Wooden framed fuselage, plywood covered, rectangular in cross-section, with a flat bottom with a single step. Two-spar rectangular wings, covered with plywood (in front) and canvas. A lower wing attached to the fuselage, an upper wing above it, mounted on struts, with two engines between wings, driving tractor propellers. Two floats under a lower wing. Conventional braced empennage. Two 150 hp radial engines Hispano-Suiza 8E.
Armament: two twin 7.7 mm Lewis machine guns and 4 bombs up to 25 kg below a lower wing.
Hartmann, Gerard (2002). Lioré et Olivier. Boulogne-Billancourt: E-T-A-I. ISBN2-7268-8607-8.
Nelcarz, Bartolomiej & Peczkowski, Robert (2001). White Eagles: The Aircraft, Men and Operations of the Polish Air Force 1918–1939. Ottringham, UK: Hikoki Publications. ISBN1-902109-73-2.
Sankowski, Wojciech: "Pierwsze Francuzy" in: Lotnictwo z szachownicą nr 20 (in Polish)
