There was no prototype and the Boomerang was built in three batches each having minor differences. The initial order was for 105 CA-12 aircraft (c/n 824 to 928, s/n A46-1 to A46-105), and the first example flew on May 29, 1942.
A follow-on contract for 95 CA-13 aircraft (c/n 929 to 1023, s/n A46-106 to A46-200) called for the introduction of minor modifications resulting from initial operational experience. The final production contract covered 49 CA-19 aircraft (c/n 1024 to 1072, s/n A46-201 to A46-249), the last 39 of which were each fitted with a vertical camera for tactical reconnaissance.
Span: 36 ft 0 in (10.97 m)
Length: 25 ft 6 in (7.77 m)
Height: 9 ft 7 in (2.92 m)
Wing area: 225 sq.ft (20.90 sq.m)
Weight empty: 5,373 lb (2,437 kg)
Loaded weight: 7,699 lb (3,492 kg)
Max speed: 305 mph (491 kmh) at 15,500 ft (4,724 m)
Range: 930 mls (1,497 km)
In the mean time, one aircraft was experimentally fitted with a General Electric turbo-supercharger in the rear fuselage, a large air intake was mounted on the port fuselage side behind the cockpit. The wing leading edge centre-section was modified to reduce drag and the area of the vertical fin was increased. Designated CA-14 (c/n 1074, s/n A46-1001) the aircraft was first flown on January 13, 1943.
Although showing improved performance, the aircraft suffered considerable buffeting. To counter this, the turbo-supercharger air intake was replaced by a streamlined air duct placed between the supercharger and the cleaned-up cowling. Furthermore the vertical surfaces were replaced with the square fin and rudder. In the summer of 1944 the aircraft, redesignated CA-14A, reached a maximum speed of 348 mph (560 kmh) at 27,887 ft (8,500 m).
However, by that time the RAAF was receiving a substantial number of Spitfire F.VIII's with a maximum speed of (650 kmh) at 7,600 m) and the Boomerang had been relegated to ground-support duty. Consequently, the turbo-supercharged CA-14/CA-14A remained a one-off aircraft.