What was found
MCN - MAJOR REPAIR - DURING C-18 CHECK EXFOLIATION CORROSION WAS FOUND ON THE UPPER SURFACE OF TEE CHORD BS 967, RBL 27 - 41, WL 208. MAINTENANCE BLENDED OUT CORROSION AND FOUND MATERIAL LOSS OUT OF LIMITS; REMOVED TEE CHORD BS 967 FROM BL 0 TO RBL 43. FABRICATED A NEW TEE CHORD, 4 REPAIR ANGLES, 4 STRAPS, AND INSTALLED REPAIR PARTS IAW B737-200 SRM 51-30-2, PG 8-9, & 13, AND SRM 53-10-9, FIG 2, PG 7-11.