The Piper PA-12 Super Cruiser is an American three-seat, high wing, single-engine conventional landing gear-equipped light aircraft that was produced by Piper Aircraft between 1946-48.
Crosswinds S.T.O.L. has the following Piper PA-12 STCs
SA653AL PA-12 & 12S Normal Category Only
Installation of 0-350-A2B OR 0-350 C2B Engine,
SENSENICH 74DM6-0-52 Propeller.
SA517AL – PA-12 & 12s installation of plexiglass skylight on top of cabin. Drawing 1-5.
SA553AL – PA-12 land planes, normal category only. Installation of 0-360-a2a engine, McCauley 1a200/dfa 8245 propeller w/spinner.
SA653AL – PA-12 & 12s normal category only. Installation of 0-320-a2b or 0-320-e2d engine, Sensenich 74dm6-0-52 propeller. Drawing 12-2, sheets 4 thru 7 and airplane flight manual supplement.
SA610AL – PA-12s normal category only. Installation of 0-360-a2a engine, McCauley 1a200/dfa 8245 propeller w/spinner. Drawing d18-2 sheet 1 thru 18, document installation instruction sheet 6-16 and airplane flight manual supplement.
SA644AL – PA-12 normal category only. Installation of 0-320-d2a or 0-320-b2b engine, McCauley 1a175/gm 8246 propeller.
SA653AL – PA-12, PA-12S Install Avco Lycoming O-320-A2B or O-320-C2B engine and Sensenich74M6-0-52 propeller.
SA656AL – PA-12 normal category only. Installation of 0-320-a2b or 0-320-e2d engine, McCauley 1a175/gm 8246 propeller.
SA669AL – PA-12 installation of Piper PA-18 Super Cub landing gear.
SA687AL – PA-12 installation of left side cabin door.
SA689AL – PA-12 & 12s Increase gross weight from 1750 to 1935 pounds.
SA493AL – PA-12 & 12s normal category only. Installation of leading edge cuff.
SA629AL – PA-12 & 12s installation of fiberglass wing-tip assembly.
SA02424SE– PA-12, PA-12S Installation of a modified door.