What was found
DURING THE YEARLY INSPECTION FOUND EXFOLIATION CORROSIOIN LEVEL 2. THE CORROSION WAS ON LT LOWER WING SKIN ATTACH ANGLE THAT ATTCHES THE WING SKIN TO THE LT OUTBOARD NACELLE SKIN AT RIB 12. REPAIRED IAW ATR 42 SRM 51-21-42, 51-21-58, 51-22-02 AND ATR REPAIR INSTRUCTION DO/TS-3056/08-10463. (A)