What was found
INNER PORTION OF RUDDER HORN TUBE (PN 63547-000) CRACKED AT WELD ASSY (PN 63546-000) ON UNDERSIDE OF WELD BEAD. AREA IN QUESTION EXHIBITED SIGNS OF EXCESSIVE WELD PENETRATION ALONG WITH PROJECTING GLOBULES. PROBABLE CAUSE OF CRACK OCCURRED DUE TO WEAKENING OF METAL FROM IMPROPER WELDING TECHNIQUES. TO PREVENT REOCCURRENCE, THE MFG SHOULD RE-EXAMINE THE HEAT RANGE REQUIREMENT IN ORDER TO GAIN PROPER DEPTH OF WELD PENETRATION REQUIRED TO INSURE FISSION OF BASE METAL AND FILLER ROD.