Butler Aircraft Corp Blackhawk ![]() The Butler Blackhawk, designed by Waverly Stearman and engineered by M.C.Baumann, seats three with a Wright Whirlwind engine.
Top speed: 130 mph
Cruise speed: 110 mph
Endurance: 5 hr
Useful load: 1040 lb
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Butler Aircraft Corp Blackhawk ![]() The Butler Blackhawk, designed by Waverly Stearman and engineered by M.C.Baumann, seats three with a Wright Whirlwind engine.
Top speed: 130 mph
Cruise speed: 110 mph
Endurance: 5 hr
Useful load: 1040 lb
|