As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT HORIZONTAL LOWER SKIN HAS A CRACK AT STA 175 9.5 INCHES FWD OF REAR SPAR DOT A154-001. GROUNDED-YES. REPAIRED RT HORIZ LOWER SKIN CRACKED AT STA 175, IAW 737-900 SRM 55-10-01-2R-11 REPAIR 11. THIS IS A CAT B REPAIR REQUIRES INSPECTION AT THRESHOLD OF 56,000 FLT CYCLES INTERVAL OF 9,000 FLT CYCLES.