As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
R/H HORIZONTAL STAB; RIB AT STATION 101.9 CRACKED AT 4TH VERTICAL STIFFNER AFT OF FRONT SPAR HFEC VERIFIED PER 737 NDT PART 6 PROCEDURE 23 / REMOVED CRACKED RIB. THEN REPAIRED AND REINSTALLED SERVICEABLE RIB IAW SRM 55-10-09-2R & SRM 51-40-02