As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING M-CHECK FOUND CABIN FLOOR PANEL NR76 HAS 1EA HAT CHANNEL CRACKED AND 1EA CHAFED THRU FABRICATED NEW PANEL IAW ERA 486157-14. REMOVED HAT CHANNELS FROM PANEL 76. DRILLED, DEBURRED AND COUNTERSUNK HOLES. ALODINED AND PRIMED FLOOR PANEL AND HAT CHANNELS.INSTALLED HAT CHANNELS AND CUT OUT ANGLE IAW SRM 51-30-2, SRM 53-23-0, FIG 5 AND DWG 9957717.