Savoia-Marchetti SM.92

Even if the preceding SM.91 showed satisfactory results when tested, the engineers of Savoia-Marchetti wanted to improve the performance of the aircraft. Given that it wasn't possible to increase the power output of the engines, as the Daimler-Benz DB 603 with a power of 1550hp wasn't yet available for Italian manufacture, the only possible way of achieving such improvement seemed the weight reduction.
By keeping the same engine types of the SM.91, the wing and the vertical stabilizers, the central gondola was discarded and moved it to the left fuselage giving that way an asymmetric looking to the aircraft.
It was armed with two 20mm MG.151/20 placed at the main central wing, a third one placed at the leading left-wing edge and two synchronised 12,7mm Breda-SAFAT machine-guns placed under each engine.
Unlike the SM.91, the landing gear at the back could be retracted and was placed in two nacelles, one in each fuselage. A third Breda-SAFAT was placed at the rear horizontal stablizer, between the two vertical stabilizers. This machine gun was remote-controlled by the second crew member.
It could carry a payload of up to 2000Kg. (4400lb) under the inner wing and an extra 160kg (350lb) could also be carried under the outer wings.
The prototype was tested two months after the Italian armistice, during the German occupation. It flew for the first time on 12th November 1943 with Comandante Aldo Moggi at the commands and with motorist Carlo Balzarini on board as the second crew member at the Vergiate airfield, in Lombardia. Both of them received the Luftwaffe's Cross of Iron.
Testing continued until the next year when, due to an identification fault, it was attacked by a Macchi C.205 of the Aeronautica Nazionale Repubblicana (National Republican Air Force) piloted by Lieutenant Mazzei belonging to the Squadriglia "Montefusco", who had mistaken the aircraft with an American P-38 Lightning.
Due to the damage that the SM.92 took in the attack, the pilot had to perform a force-landing at Campo della Promessa (Promessa's airfield), close to Lonate-Pozzolo, where Moggi managed to minimized the damage done to the prototype. After the pertinent reparations made to the prototype, it flew again in June 1944 with a total of 21 flight-hours.
The only prototype was destroyed, together with the SM.91, by an American bombardment on 27th December 1944 which damaged seriously the installations of Savoia-Marchetti and the village of Vergiate.

Sources:
1. https://it.wikipedia.org/wiki/Savoia-Marchetti_S.M.92 (translated)
2. https://en.wikipedia.org/wiki/Savoia-Marchetti_SM.92
3. Salamander Books - The Complete Book of Fighters