As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A SCHEDULED MAINTENANCE EVENT, MAINTENANCE FOUND THE STRUCTURAL WEB UNDER THE COPILOTS SEAT RAIL SHELF CRACKED. THE CRACK WAS APPROXIMATELY 1.5 INCHES LONG LOCATED FORWARD OF FRAME 7 ON THE SEAT RAIL WEB. THE CRACK WAS REPAIRED BY REMOVING THE DAMAGED AREA AND INSTALLING A DOUBLER IAW MFG STANDARD REPAIR DRAWING NR SR-HK-0034 REV 1.