As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEVEL 2 CORROSION FOUND DURING A TRANSITION LIGHT 'C' PHASE IN PLAN. MAIN CABIN FUSELAGE CIRCUMFERENTIAL FRAME HAS SURFACE CORROSION AT BS 1148, STRINGER 16R TO 12R. CLEANED CORROSION AND FOUND, OUT OF LIMITS. FABRICATED REPAIR PART IAW B727 51-40-03, FIG 1. INSTALLED REPAIR IAW B727 SRM 51-40-03 FIG 1. (M)