What was found
DURING A MAINTENANCE VISIT FOUND CORROSION, FUSELAGE, LT UPPER CUSP FRAME AT STA 360 FROM SHIM AT ATTACH ANGLE, LONGERON 21 LEFT. DAMAGE EXCEEDED LIMITS IAW DC-8 SRM. REMOVED DAMAGED, TREATED AREA IAW DC-8 SRM 51-1-8. FABRICATED AND INSTALLED SHIM AND FITTING IAW DC8 SRM 51-1-20D AND 51-3-0. (CORROSION DAMAGE RECORDED IN EWA CORROSION PROGRAM).