What was found
AIRCRAFT LANDED WITH RIGHT ENGINE FEATHERED. REMOVED COWLING TO INVESTIGATE ENGINE STOPPAGE REMOVED TOP SPARK PLUGS, FOUND WHEN TURNING PROPELLER THAT IT WOULD ONLY MOVE ONE REVOLUTION THEN LOCKUP. WHEN LOOKING IN CYLINDERS ONLY FRONT TWO, NR 5 AND NR 6 PISTONS WERE MOVING. NOTIFIED OWNER THAT CRACKSHAFT APPEARED TO BE BROKEN. BY CRANKSHAFT CHEEK NR 7.