The Lioré et Olivier 300 (abbreviated to LeO 300) was a 1930s French prototype night bomber. Only one was built when the programme was abandoned. Design and development The LeO 300 was designed to meet a French requirement for a BN.5 category night bomber. It was a high-wing cantilever monoplane with a crew of five. The prototype first flew in September 1933, powered by four Renault 12Jb engines mounted in tandem pairs on the wings. The LeO 300 was superseded by the LeO 301 with more powerful engines but with the withdrawal of the requirement it was abandoned in final assembly and work on the programme was stopped. Variants LeO 300 Prototype four-engine night bomber, one built. Leo 301 Improved variant with more powerful engines, not completed. Specifications References Notes Bibliography 1930s French bomber aircraft 300 High-wing aircraft Four-engined push-pull aircraft Aircraft first flown in 1933