As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FS 661 - 727, KEEL BEAM SKIN PANEL FABRICATION: DURING INSPECTIONS PER EO 3-58542-3, THE SUBJECT PANEL WAS FOUND CRACKED. BAC SB 737-53-1104 PROVIDES REPAIR INSTRUCTIONS TO REFABRICATE THE PANEL, HOWEVER ER/A 385214-14 WAS ISSUED TO CUT AN ACCESS HOLE IN THE MOUNTING COVER BETWEEN THE HYDRAULIC PUMP AND RESERVOIR IN ORDER TO INSTALL SOLID FASTENERS IN ALL SKIN PANEL LOCATIONS.