As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:CLH WING UPPER SKIN SURFACE AT WS 150-240 AFT SPAR BEAM PANEL IS BUBBLING UP DUE TO CORROSION. REMOVED CORROSION FOUND REAR SPAR UPPER CHOR OUT OF LIMITS PER SRM 57-20-01-1A-1REPAIRED LH WING REAR SPAR UPPER CHORD PER EO# B757-5730-82881-A.