As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: POSSIBLE CRACK ON LEFT STAB INTERNAL STRUCTURE WEB 3RD RIB FROM FORWARD TO AFT LOWER SIDE LEADING EDGE AT BS 170.34. REMOVED DAMAGE RIB AND FABRICATED AND DRILLED REPAIR 'T' SECTION REPAIR ANGLE AND 2EA SHIMS. PER B737NG SRM 55-10-09-2R-5. REINSTALLED RIB AT LEFT STAB INTERNAL STRUCTURE. B737NG SRM 51-40-02.