As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RH HORIZONTAL STAB RIB 5 (STAB STA 129.50) HAS CRACK ON 2ND STIFFENER AT LOWER EDGE / REMOVED THE DAMAGED PART AT RH HORIZ. STAB RIB 5 STAB STD 129.50 2ND STIFFENER AT LOWER EDGE AND INSTALLED REPAIR PARTS IAW SRM 55-10-09-2R-4. 88920U 22MAR21