As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L/H HORIZONTAL LOWER SKIN IS CRACKED AT STA 137, 16 INCHES FWD OF REAR SPAR. GROUNDED - YES. REPAIRED L/H STAB LOWER SKIN IAW B737-900 SRM 55-10-01-2R-11. THIS IS A CATEGORY B REPAIR WITH INSPECTION THRESHOLD OF 56,000 TOTAL FLIGHT CYCLES AND REPEAT INTERVALS OF 9000 FLIGHT CYCLES.