As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN RH OMEGA BEAM UPPER SURFACE HAS CORROSION AROUND FASTNER HOLE AT FRAME 23- REMOVED REPAIR DOUBLER ON RH OMEGA BEAM AT FR23, FABRICATED NEW ONE & ATTACHED IT ON SIDES. RIVETS THROUGH TOP & NUTPLATE NEED TO BE INSTALLED YET. INSTALLED NUTPLATE & TOP RIVETS IN THE REPAIR DOUBLER ON THE RH OMEGA BEAM AT FR23.