As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE CHECK, CORROSION WAS DISCOVERED OUT OF LIMITS ON THE LEFT HAND WING FRONT SPAR LOWER FORWARD CHORD PLATE, WS 360 TO WS 450. REMOVED CORROSION IAW B727 SRM 511006. REMOVED DAMAGED SECTION IAW B727 SRM 513002. FABRICATED NEW CHORD FROM BAC 15201143 2024 T3511. TREATED AND PRIMED IAW B727 SRM 511002 AND MM 512002. INSTALLED IAW B727 SRM 513002.