What was found
LEVEL 3 CORROSION FOUND ON THE UPPER SURFACES OF THE LEFT AND RIGHT WING UNDER THE EMERGENCY EXIT WING WALK PAINT. RIGHT WING UPPER SURFACE LOCATIONS STRINGERS 2,3,4,5,7,8 AND REAR SPAR AT APPROX WBL 71.24-92.5. LEFT WING UPPER SURFACE LOCATIONS STRINGERS 1,4,5,9 AND REAR SPAR AT APPROX WBL 71.24-92.5 AND 165-235. CORROSION DEPTH IS GREATER THAN THE SRM LIMITS AND REQUIRES ENGINEERING FOR REPAIRS.