Aviation of World War II

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G-21 ✪ Goose
Amphibious Transport Aircraft

G-21 Goos in flight

Grumman G-21 Goose is a twin-engine flying boat - amphibious - high-wing with two Pratt-Whitney R-985 radial engines, 450 hp, and two fixed stabilizing floats under the wing. First flight on May 29, 1937

The deep two-legged hull of the boat had a standard design, and the horizontal tail was reinforced with struts. The possibility of landing on water and on land was provided by a wheeled chassis with a tail wheel, all three racks of which were retracted inside the hull.

Produced before the war for commercial use under the designation G-21A, Goose aircraft, which carried up to six passengers, continued to be produced during World War II for the US Air Force and US Navy under the designation JRF Goose.

A total of 345 aircraft were built from 1938 to 1945. The aircraft continued to operate after the war, with MacKinnon Enterprises specializing in refurbishing them and creating improved models. Some of these aircraft were in use until 1980.

G-21A Goose Specification
Crew 2
Wing span, m 14.94
Wing area, m² 34.84
Length, m 11.68
Height, m 4.57
2×PE Pratt Whitney R-985-AN6 Wasp Junior, power h.p. 2×450
Weight, kg:
Empty 2,461
Loaded weight 3,608
Maximum speed, km/h 323
Cruising speed, km/h 307
Rate of climb, m/s 5,436
Service ceiling, m 6,400
Service range, km 1,030
Up to 6 passengers or depth charges, kg 2 × 113 (250 lb)
Photo Description
Drawing G-21 Goose

Drawing G-21 Goose

JRF-5 Goose, 1942


  • Encyclopedia of military engineering /Aerospace Publising/
  • American Warplanes of World War II /under cor. David Donald/