As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND GUIDE MOUNT ATTACHMENT AT TORQUE BOX HAS DAMAGE TO THE PRIMARY STRUCTURE. UPON REMOVAL OF FLOOR BOARD FOR FLOOR MOUNT CENTER GUIDE INSTALLATION, FOUND DAMAGE AREA JUST AFT OF THE CENTER GUIDE MOUNT BOLTS, STA 1800 CENTER LINE BEAM. REMOVED DAMAGED MOUNT ASSY & MFGED REPAIR PARTS FOR DAMAGED WEB. ASSEMBLED MOUNT & INSTALLED 2 EA. CENTER GUIDES. A/C READY FOR RETURN TO SERVICE. SUSPECT DMG CAUSED BY LD3 IMPACT ON FLOOR FITTING.