Length: 9.2 m (30 ft 2 in) (Dutch) or 9.1 m (30 ft) (Finnish)
Upper wingspan: 12.00 m (39 ft 4 in)
Lower wingspan: 10.50 m (34 ft 5 in)
Height: 3.30 m (10 ft 10 in)
Wing area: 31.5 m2 (339 sq ft)
Empty weight: 1,400 kg (3,086 lb)
Gross weight: 2,250 kg (4,960 lb) (Dutch) or 2,500 kg (5,500 lb) (Finnish).
Max takeoff weight: 2,900 kg (6,393 lb)
Powerplant: 1 × Rolls-Royce Kestrel liquid-cooled V-12 (Dutch), 485 kW (650 hp) or 850 hp (630 kW) Bristol Pegasus XII nine-cylinder air cooled radial (Finnish)
Maximum speed: 320 km/h (200 mph, 170 kn) (Dutch) or 340 km/h (210 mph) (Finnish).
Range: 830 km (520 mi, 450 nmi) (Dutch) or 840 km (520 mi) (Finnish).
Service ceiling: 8,300 m (27,200 ft) (Dutch) or 8,400 m (27,600 ft) (Finnish).
Rate of climb: 8.3 m/s (1,630 ft/min)
Guns: 2 × 7.9 mm (0.31 in) machine guns fixed in top of front fuselage with a third manually aimed from rear cockpit in Dutch aircraft.
Finnish aircraft used same number of 7.62 mm (0.30 in) L-33/34 in same locations.
Bombs: 2 × 175 kg (385 lb) or 4 × 100 kg (220 lb) bombs on under wing racks
The Fokker C.X was originally designed for the Royal Dutch East Indies Army, in order to replace the Fokker C.V, Like all Fokker aircraft of that time, it was of mixed construction, with wooden wing structures and a welded steel tube frame covered with aluminum plates at the front of the aircraft and with fabric at the rear.
The prototype was built in 1934 with a Rolls-Royce Kestrel V engine.
The East Indies Army ordered 13 C.Xs, but they were soon replaced in the scout/light bomber role by the American Martin B-10s.
Until the Japanese attack on the Dutch East Indies in 1941, the C.X remained in use as a trainer and target tug.
The Dutch Air Force ordered 16 C.Xs, and later four more with Kestrel IIS engines.
These four were later re-equipped with Kestrel V engines; the Kestrel IIS proved not very reliable.
Two C.Xs were delivered to the Spanish Republic, and four more to Finland.
The Finns also license-produced 35 C.Xs until 1942.
These C.Xs were equipped with Bristol Pegasus XII engines.
C.X Series I : Fokker-built aircraft for the Dutch using an inline engine
C.X Series II : Fokker-built, 4 to Finland
C.X Series III: Licence-built in Finland, had modified upper wings which were slightly more swept.
C.X Series IV : Licence-built in Finland, 5 planes which were put together from spare parts.