What was found
DURING C AND D-CHECK ACCEPTANCE INSPECTIONS WHILE COMPLYING WITH AD 90-18-03; SB 57-98 OF THE RIGHT WING MAIN FRAME T-CAP, FOUND NUMEROUS CORRODED FASTENERS, GOUGES AND CORROSION ON THE T-CAP BETWEEN STRINGERS 11 THROUGH 19 AND 21 TO 22. CLEANED AND TREATED CORROSION ON THE T-CAP IAW SB 57-98 AND DC-9 SRM 51-30-5. COMPLIED WITH ULTRASONIC INSPECTION OF WING PLANKS PER SB 57-98. NO CORROSION THINNING OF WING SKIN NOTED.