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MacDonald S-20

The S-20 utilizes all-metal construction but keeps it simple by the extensive use of pop rivets. It features open-cockpit seating for one, low wings and conventional tail-wheel land-ing gear. The fuselage is of steel-tube truss construction with a light alloy skin. The constant-chord wings are also covered with the same light alloy skin. The prototype of the S-21.

Gross Wt. 720 lb
Empty Wt. 456 lb
Fuel capacity 10 USG
Wingspan 25’
Length 18’6”
Engine 53-hp Volkswagen.
Top speed 110 mph
Cruise 90 mph.
Stall 38 mph.
Climb rate 850 fpm
Takeoff run 300 ft
Landing roll 300 ft
Range 250 miles

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