As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:3C*** MAJOR REPAIR *** MAIN CABIN AFTER REMOVAL OF FLOOR PANEL ON CENTER WING AREA FOUND CORROSION ON L/H TUNNEL AT STA 1239, XCW= 101.8 AND XCW= 108.REPAIRED CORRODED AREA AT THE CENTER WING L/H TUNNEL AT STA XCW=101.8 AND XCW=108 IAW VTSAA EA 011-5730-01-B0049 I/R, UPS EO MD11-5730-87780-A DATED 08/11/23 AND FAA FORM 8100-9 BY P.LAU (AR-830967) DATED 08/10/23 (MAJOR)