Consolidated Model 21

1st Flight 1931

Military Users-United States Army Air Corps, United States Coast Guard, Colombian Air Force, Paraguayan Air Arm, Mexican Air Force.

Consolidated Model 21

The Consolidated Model 21 was an American two-seat training aircraft built by the Consolidated Aircraft Company.

It was used by the United States Army Air Corps with the designation PT-11 and the United States Coast Guard under the designation N4Y.


The Model 21 was an aerodynamic cleaned up version of the Model 12/PT-3, one of the distinguishing features being curved instead of angular tail surfaces.

The aircraft was a single-engined biplane with fixed tail wheel landing gear and accommodation for two in open cockpits.

Consolidated Model 21

Designated the PT-11 by the United States Army Air Corps it progressed through a number of trial variants but was not built in large numbers.

11 Examples of the model 21-C were built in Canada as the 21-M for Mexico but none were built for local use.

Consolidated Model 21


XPT-933, YPT-11, PT-11A, Y1PT-11B, PT-11C, PT-11D, PT-12, Y1BT-6, BT-6, BT-7, XN4Y-1, N4Y-1.

Consolidated Model 21


Crew: two

Length: 26 ft 11 in (8.20 m)

Wingspan: 31 ft 7 in (9.63 m)

Height: 9 ft 8 in (2.95 m)

Wing area: 280 ft² (26.01 m²)

Empty weight: 1,918 lb (870 kg)

Max. takeoff weight: 2,585 lb (1173 kg)

Power plant: 1 × Lycoming R-680A radial piston, 200 hp (149 kW)


Maximum speed: 118 mph (190 km/h)

Service ceiling: 13,700 ft (4175 m)

Consolidated Model 21


Reuben Fleet and the story of Consolidated Aircraft-William Wagner.

Consolidated Aircraft Corporation-Katrina Pescador, Mark Aldrich.

The Complete book of fighters-William Green, Gordon Swanborough.


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