What was found
DURING ROUTINE C-CHECK INSPECTION, CORROSION WAS FOUND ON THE LEFT HORIZONTAL STABILIZER UPPER PANEL, INNER BEADED SKIN BETWEEN STATION XE150 TO 250. REPAIR ACCOMPLISHED REMOVAL OF DAMAGED AREA, FABRICATION AND INSTALLATION OF AN INTERNAL FILLER AND AN INTERNAL REPAIR DOUBLER IN ACCORDANCE WITH DER APPROVED SKETCH C59-R10 AND ENGINEERING ORDER 55-DC8-696.