What was found
DURING ROUTINE C-CHECK INSPECTION, STA 1120 BELT FRAME WAS FOUND CORRODED. DAMAGE WAS LIMITED TO ONE AREA JUST INBOARD OF LONGERON 35 RT AND APPROXIMATELY 1 INCH IN DIAMETER. THE DAMAGE WAS REPAIRED BY CUT-OUT, INSTALLING A FILLER, AND INSTALLING AN EXTERNAL DOUBLER TO THE CAP. REPAIR WAS ACCOMPLISHED IAW DRAWING HSE27-53-157, WHICH WAS FAA DER APPROVED AND E.O. 53-DC8-144. (X)