As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING REPLACEMENT OF HORIZONTAL STABILIZER SKINS AFT, FOUND SKINS CRACKED AT THE UPPER, INBOARD ATTACHMENT AREA. REPLACING THE SKINS DETAILED ABOVE DUE TO OTHER DEFECTS, BUT HAPPENED TO FIND THESE CRACKS. RECOMMEND CLOSER ATTENTION TO THE AREA ADJACENT THE STABILIZER ATTACHMENT UPPER AND LOWER SURFACES DURING ROUTINE INSPECTIONS.