As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-15 CHECK CORROSION WAS FOUND ON LOWER FUSELAGE SKIN AT BS 727-727A AND LT KEEL BEAM. MAINTENANCE REMOVED EXISTING DOUBLER & TRIPLER AND TRIMMED OUT CORRODED SKIN; PERFORMED A HFEC INSPECTION TO VERIFY NO CRACKS EXIST; FABRICATED A REPLACEMENT DOUBLER & TRIPLER, AND 4 EACH FILLERS; AND INSTALLED REPAIR PARTS IAW ER 15-5361-03154-SS3.