What was found
LEFT WING TOP SKIN, EVIDENCE OF CORROSION AROUND THE BONDING POINT GROUNDED - YES. REMOVED CORROSION ORIG .150, MATERIAL LOSS .004, REMAINING .146 FOUND TO BE WITHIN LIMITS, HFEC, BHEC, DVI NO DEFECTS NOTED REMOVAL AND REINSTALL BONDING SPIGOT MEASUREMENTS 1.80L X 1.70W BETWEEN RIB 19 AND 20 5 INCHES AFT OF FWD SPAR REF A320 SRM 57-21-11-300-026 AND SRM 57-21-11-203-014. THIS IS A CAT A REPAIR NO FURTHER ACTION REQUIRED.