Capacity: Pilot + 6 passengers
Powerplant: P&W R-1340 Wasp (420 hp)
Length: 28 ft 4-1/2 in
Height: 9 ft
Wingspan: 41 ft 10 in
Wing Area: 295 sq ft
Airfoil: Clark Y (18% at Root, 12% at tip)
Gross Weight: 4,500 lb
Empty Weight: 2,590 lb
Useful Load: 1,910 lb
Payload with full fuel and 170 lb pilot: 940 lb
Wing Loading: 14.4 lb/sq ft
Power Loading: 10.7 lb/hp
Top Speed: 170 mph
Cruising Speed: 145 mph
Landing Speed: 60 mph
Climb at Sea Level : 1400 fpm
Climb at 10,000 ft : 650 fpm
Time, SL to 10,000 ft: 10.5 min
Service Ceiling: 19,300 ft
Absolute Ceiling: 21,100 ft
Takeoff Ground Roll: 535 ft
Landing Ground Roll: 475 ft
Fuel: 116 gal
Oil: 13 gal
Years Manufactured: 1930-31
Quantity Manufactured: 12
Certification: ATC 381
Alpha - Model 3
Capacity: Pilot + 2 passengers + Cargo
or Pilot + Cargo
Powerplant: P & W R-1340 Wasp C (420 hp)
Length: 28 ft 4-1/2 in
Height: 9 ft
Wingspan: 41 ft 10 in
Wing Area: 295 sq ft
Airfoil: Clark Y (18% at Root, 12% at tip)
Gross Weight: 4,500 lb
Empty Weight: 2,679 lb
Useful Load: 1,821 lb
Top Speed: 170 mph
Cruising Speed: 145 mph
Landing Speed: 60 mph
Climb at Sea Level : 1400 fpm
Climb at 10,000 ft : 650 fpm
Climb SL to 10,000 ft: 10.5 min
Service Ceiling: 19,300 ft
Absolute Ceiling: 21,100 ft
Takeoff Ground Roll: 535 ft
Landing Ground Roll: 475 ft
Fuel: 116 gal
Oil: 13 gal
Years Manufactured: 1931
Certification: Group 2-335
Quantity Manufactured: 5 as original equipment. A number of Model 2's were converted to Model 3's by the factory.
Alpha - Model 4
Capacity: Pilot + Cargo
Powerplant: P&W R-1340 Wasp C (420 hp)
Length: 28 ft 4-1/2 in
Height: 9 ft
Wingspan: 43 ft 10 in
Wing Area: 312 sq ft
Gross Weight: 4,700 lb
Empty Weight: 2,800 lb
Useful Load: 1,900 lb
Top Speed: 177 mph
Certification: ATC 451
Quantity Manufactured: None as original equipment. Most Model 3's were converted to the Model 4 configuration.
Alpha - Model 4a
Capacity: Pilot + Cargo
Powerplant: P&W R-1340 Wasp C (420 hp)
Length: 28 ft 4-1/2 in
Height: 9 ft
Wingspan: 43 ft 10 in
Wing Area: 312 sq ft
Gross Weight: 5,100 lb
Empty Weight: 2,650 lb (2,660 for NC11Y as equipped)
Useful Load: 2,450 lb
Top Speed: 177 mph
Certification: ATC 461
Quantity Manufactured: None as original equipment. Most Model 4's were converted to the Model 4a configuration.
Links
