As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT HORIZONTAL STABILIZER LOWER SKIN SHOWING CRACK INDICATIONS BETWEEN FWD AND AFT, BETWEEN STAB STA 120.30 AND 129.50. GROUNDED - YES. REPAIRED THE DAMAGED AREA ON THE LT HORIZONTAL STAB IAW SRM 55-10-01-2R-11, PERMANENT CATEGORY B REPAIR INSPECTION THRESHOLD 56,000 FLIGHT CYCLES 9000 INTERVAL FLIGHT CYCLES PER B737-800 SRM 55-10-01-2R-11TABLE 204.