What was found
(CAN)AFTER TAKEOFF AND SELECTING SKI BUCKETS UP, THE PILOT OBSERVED THE L/H MAIN SKI HAD AN APPROXIMATE 15 DEGREE NOSE DOWN ATTITUDE. THE AFT TORSION BAR WAS FOUND FRACTURED. PRIOR TO DISCOVERY OF FAILED ROD, THE AIRCRAFT HAD BEEN STUCK AND TOOK A LOT OF EFFORT TO FREE. UNUSUAL LOADING MAY HAVE OCCURRED CONTRIBUTING TO THE FAILURE. CRACK ABOUT 3/8 INCHES HAD APPARENTLY PREVIOUSLY EXISTED. MAGNAFLUX INSPECTION ADDED TO THE 600 HOUR INSPECTION.