As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CRACK APPROXIMATELY 1.3 X 0.7 INCH LENGTH FOUND ON THE LT FUSELAGE TO SKIN VERTICAL STABILIZER UPPER LOBE DOUBLER STA 2521 DURING HFEC INSPECTION. CARRIED OUT STA 2403.6 TO STA 2524.4 EMPENNAGE UPPER LOBE DOUBLER SB 747-53A2651 REV 1 AS PER PRI 499106-14AD REV 0, 1, 2, 3. DATED 29FEB12.