As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C-21 CHECK CORROSION WAS FOUND ON UPPER AND LOWER SURFACE OF UPPER T-CAP REPAIR AT BS 967, RBL 10 TO RBL 48. MAINTENANCE REMOVED UPPER T-CAP REPAIR AT BS 967, RBL 10 TO RBL 48; FABRICATED A NEW REPLACEMENT T-CAP; INSTALLED REPAIR PART IAW B737-200 SRM 53-10-9 FIG 2 PG 7-11.