I flew the Super and was also the Director of maint. on one.
The wing is SHORTER at 90 ft with squared off tips. Additionally the wing is flush riveted. Much smoother.
The cowl flaps are electric.
The oil cooler is faired and is automatically controllled.
Gear wells are faired and have gear doors.
Tail wheel retracts
Flight controls have aerodynamic Boost tabs.
Most Supers had outer wing tanks for a total of 1600 gal. of fuel.
The Super is a transport Catagory aircraft (the 3/47 was a CAR 3 Cert.)
There were a bunch of other differences I'm sure I'll remember more
The one I flew was sold to another company and was crashed and burrned on a street in Miami.
