Ing. Raffaele Coflenti last design for the CRDA was the Cant.23 airliner for the Sisa (SocietÓ Italiana Servizi Aerei) to be operated on the route Trieste to Budapest, Hungaria. It was entirely constructed of duralumin, the Warren truss braced sesqui-wing was covered with fabric. Operated by a crew of three, ten passengers could be carried in the rectangular cabin which had five windows on each side.
The powerplant consisted of a 510 hp Isotta Fraschini Asso 500 twelve-cylinder liquid-cooled V-engine in the nose (originally planned was an Asso 200) and a 250 hp Isotta Fraschini Asso 200 six-cylinder liquid-cooled in-line-engine on each lower wing, all driving two-bladed metal propellers.
In 1929 a static test frame was constructed, the prototype flew early 1932 and was registered I-ABLA on July 11, 1932, being reregistered to CRDA on November 3, 1932. Unfortunately the long development and the changed political situation prevented the aircraft from being taken into service and the program was dropped on May 1, 1933, and the sole example was subsequently scrapped.
Span: 66 ft 7.2 in (20.30 m)
Length: 48 ft 10.6 in (14.90 m)
Weight empty: 1,996 lb (4,400 kg)
Max speed: 133 mph (214 kmh)
Service ceiling: 12,623 ft (3,850 m)
Range: 590 mls (950 km)."