What was found
DURING A MAINTENANCE VISIT FOUND CORROSION, HORIZONTAL STABILIZER, CENTER SECTION UPPER CENTER PLANK UPPER SURFACE AT RBL X30. DAMAGE EXCEEDED LIMITS IAW DC-8 SRM. REMOVED DAMAGED, TREATED AREA IAW DC-8 SRM 51-1-8. FABRICATED AND INSTALLED PLANK IAW SB 55-15. (CORROSION DAMAGE RECORDED IN EWA CORROSION PROGRAM).