EMPLOYEE WAS STANDING ON TILT CYLINDER BASE, RATHER THAN ON THE CATWALK, CLEANING HIS WINDSHIELD, THERE WAS ICE ON THE PLACE HE WAS S TANDING. HE SLIPPED ON THE ICE, FALLING AND HITTING HIS LE FT ARM ON THE HEADLIGHT FRAME CUTTING HIS LEFT FOREARM BELOW THE ELBOW, REQUIRING STITCHES TO CLOSE.