As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - C - DURING INSPECTION SKIN WAS FOUND TO HAVE BULGE AT BS 847 BETWEEN STR 27R AND 26R. MAINTENANCE CUTOUT BULGED AREA OF SKIN AND PERFORMED HFEC INSPECTION TO VERIFY NO CRACKS. FABRICATED REPAIR DOUBLER AND FILLER AND INSTALLED REPAIRS IAW B737-300 SRM 53-00-01 FIG 201, SHEET 1-3, SRM 53-60-01 FIG 1, SHEETS 7 & 8.