What was found
L/LT WW FWD BULKHEAD TOP OF WING CENTER BOX SECTION, REMOVABLE PANEL HAS HEAVY CORROSION, APPROX 10 INCHES O/B OF VERTICAL KEEL BEAM WEB. REMOVED CORRODED ANGLE, CLEANED, TREATED AND PRIMED UPPER WING SURFACE THAT MATES WITH ANGLES REF 51-00 VOL 11 SRM, OK TO INSTALL ANGLE. INSTALLATION COMPLETED AS PER SRM 53-00-01.