The General Airplane Service Model 11 is a modified biplane Piper Cub for crop dusting. Created by General Airplane Service of Sheridan, Wyo, it was modified to a reverse-tagger biplane, the plane is fitted with tandem one-wheel landing gear. The fuselage of a J-3 Cub with a Piper PA-18 top cabin structure, wing and tail. Power was a Ranger 200 hp in a Fairchild PT-19 cowling.
The first flight was on October 12,1953.
Engine: Ranger 200 hp
Span: 32 ft 2.5 in
Length: 24 ft
Height: 6 ft 8 in
Empty weight: 1200 lb
Gross weight: 3000 lb
Payload: 1500 lb
Operating speed: 40-100 mph
All Aero 