As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLOORBEAM 1R SQUEAKS. UPON TROUBLE SHOOTING OF CAUSE, FROM E&E COMPT, FOUND NUMEROUS FLOORBOARD FASTENERS NOT SECURED WITH NUTS AND WASHERS MISSING ALONGSIDE P37 CB PANEL OUTBOARD TOP SIDE. YOU'LL HAVE TO INSPECT FWD AND AFT SIDE FOR ADDITIONAL CHECK TO CONFIRM THAT NO OTHER UN-SECURED FASTENERS EXIST. REPLACED FLOORBOARD AT DOOR 1RH.