|SPCA 30 with the original landing gear|
Development and design
This aircraft was an all-metal twin boom low wing monoplane built by SPCA in order to meet the requirements of the Technical Aeronautic Service ( Service Technique de L'Aéronautique ) of the French government towards the end of the 1920s for a bomber and reconnaissance plane type designated as Multiplace de Combat.
Two units of the SPCA 30 were built, registration F-AKCA and F-AKCB. The first one was fitted with two Lorraine-Dietrich 18 Kd water-cooled W engines engines and the second one with two Hispano-Suiza 12Nb engines, both giving about 485 kW (650 hp). The original bulky landing gear was later replaced by a lighter one.
The SPCA 30 was the only twin boom aircraft that entered the contest, but both prototypes of this plane were ignored in favor of the competing Amiot 143 after evaluation. Other Multiplace de Combat plane prototypes built by other companies at the time such as the Blériot 137 and the Breguet 410 underwent a similar fate as the SPCA 30.
Data from 
- Crew: 4
- Length: 17 m (55 ft 9 in)
- Wingspan: 26.5 m (86 ft 11 in)
- Height: 4.10 m (13 ft 5 in)
- Wing area: 100 m2 (1,100 sq ft)
- Empty weight: 1,750 kg (3,858 lb)
- Gross weight: 6,500 kg (14,330 lb)
- Powerplant: 2 × Lorraine-Dietrich 18 Kd W-18 water-cooled piston engine, 480 kW (650 hp) each
- Maximum speed: 255 km/h (158 mph; 138 kn)
- Range: 650 km (404 mi; 351 nmi)
- Service ceiling: 7,500 m (24,606 ft)
- Time to altitude: 2,000 m (6,562 ft) in 6 minutes
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