Macchi M.B.323  The Macchi MB.323 was an Italian single-engine basic training monoplane designed and built by Macchi. No orders were placed and only a prototype was built. Designed as a basic trainer to complement the M.416 in Italian military service, the MB.323 first flew in 1952. It was a single-engine, low-wing cantilever monoplane powered by a nose-mounted Pratt & Whitney Wasp radial engine and a retractable tailwheel landing gear. It had two tandem cockpits covered by a sliding one-piece canopy. The type was evaluated against the Fiat G.49 which was preferred by the air force and the MB.323 did not enter production.