Letov Š-1

The Letov Š-1 was a Czechoslovak single-engined, two-seat biplane surveillance aircraft, it was first military aircraft built in Czechoslovakia. It was designed by Alois Šmolík at Letov Kbely. Š-1 first flew in 1920.

Variants

 * SH-1 : 127 kW (230 hp Hiero L engines. Later redesignated Š-1. 28 built.
 * SM-1 : 194 kW (260 hp Maybach Mb.IVa engines. Later redesignated Š-2. 64 built.
 * Sm A 1 : Commercial variant. Canopy over rear cockpit for 2 passengers.