What was found
DURING C-14 CHECK EXFOLIATION CORROSION WAS FOUND ON LOWER SURFACE OF WEB IN VICINITY OF LT AFT LAVATORY POTABLE WATER AND SINK DRAIN LINES, BS 996, LBL 55, WL 208. MAINTENANCE BLENDED CORROSION AND FOUND MATERIAL LOSS TO BE OUT OF LIMITS PER B737-300 SRM 53-60-51, PG. 105, 108, & 112, FIG. 101. REMOVED CORRODED WEB BS 996, LBL 55, WL 208; FABRICATED A NEW REPLACEMENT WEB; INSTALLED REPAIR PART IAW B737-300 SRM 51-70-13, PG. 1, FIG. 1.