What was found
DURING A MAINTENANCE VISIT, FOUND CORROSION FRAME TO CUSP FITTING SHIM IN MAIN CABIN AT STA 478 TO 480, BL 21R. DAMAGE EXCEEDED LIMITATIONS IAW DC8 SRM. REMOVED DAMAGE, TREATED AREA IAW DC8 SRM 51-1-8. (CORROSION DAMAGE RECORDED IN EWA CORROSION PROGRAM.)