
The 1916 Sturtevant S-4 Tractor was an Army scout-bomber designed by George Armitage and Grover Loening.
Steel frame, steel sheeting skin; experimental 8’0″ x 2’6″ twin-gun gondolas were mounted on each lower wing of one of the ships as a “Battleplane.”

Four went to the Air Service as AS126-127, and AS214-215.
A contract for 26 was pared after complaints from pilots about crowded cockpit, overheating problems, and general workmanship.
Engine: 150hp Sturtevant 5A
Wingspan: 48’7″
Length: 25’1″
Useful load: 525 lb
Cruise speed: 73 mph
Stall: 40 mph
Seats: 2








