Letov S-328 in Czech Service Initially developed for a Finnish requirement for a two seat biplane reconnaissance, the Letov S-28 first flew in 1929. Although not taken up by the Finish Air Force, Czechoslovakia bought 12 production Letov S-128s. These were followed by 4 S-228s for Estonia which were delivered in 1932. Production then shifted … Continue reading "Letov S-328 in Czech Service"