As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SDR. CABIN FLOOR BEAM AT STA 1309 RBL 00 UPPER CAP AFT, FLANGE, LOWER SURFACE CORRODED UNDER NUT PLATE. FABRICATED ANGLE REPAIR PER SRM 53-05 FIG 20A PAGE 100( 2EA AT RBL 22 AND LBL20 ). FABRICATED REPAIR FILLER PER SRM MD80 53-05 FIG 20A (2EA). INSTALLED ALL PARTS AT MAIN CABIN STA 1309 RBL 22 AND LBL 20 PER SRM MD80 SRM 53-05 FIG 204. AT SAA/SAT DURING HMV ON N/R 185690 W/O 88406830001.