As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUSELAGE / VENTRAL STAIRWAY OPENING / RT TORQUE BOX / FS 1263 : CRACKED BEAM AND GUSSET INSPECTIONS OF THE RT VENTRAL STAIRWAY TORQUE BOX STRUCTURE REVEALED A .5" CRACK IN THE UPPER HORIZONTAL BEAM AND A 1.5 INCH CRACK IN THE GUSSET CHANNEL AT FS 1263. THE CRACKS ARE TYPICAL OF BAC S/B 727-53-0129. THE DAMAGED STRUCTURE WAS REPLACED WITH NEW PARTS PER ER/A 379598-14AD.