 Early examples had the pilot's open cockpit located aft of the wing, but this was later relocated forward of the wing.Developed as a passenger transport, versions of the H-190 were also built as catapult-ready mail planes intended to be launched from transatlantic liners, and as coastal patrol aircraft.The sole LeO H-194 was flown by Marc Bernard together with a CAMS 37 flown by René Guilbaud in a long-distance expeditionary flight across Africa in late 1926.