What was found
DURING D-CHECK INSPECTION, CORROSION WAS FOUND ON LEFT HORIZONTAL STABILIZER UPPER AND LOWER SURFACES OF SKIN FROM STATION XE 221 TO XE 272. REMOVED THE DAMAGED UPPER AND LOWER SKIN PANELS AND FABRICATED PANELS OF .080 7075-T6 MATERIAL. ALSO, REPLACED EACH BEAD WITH A HAT CHANNEL REINFORCEMENT OF SAME LENGTH OF .050 7075-T6 MATERIAL AND INSTALLED PANELS ON HORIZONTAL STABILIZER. ALL WORK ACCOMPLISHED IAW EO 9507232. 8110-3 ISSUED BY DER SW-713. (M)