As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSPECTION FOR CRACKS ON THE RIB FLANGES OF THE HORIZONTAL STABILIZER ASSY, RIB FOUND CRACKED (ALONG WITH 8 OTHER RIBS; EACH RIB FAILURE IS DOCUMENTED ON SEPARATE SDR FORMS) ON THE LOWER FLANGE AT RT HORIZONTAL STAB CANTED STATION 62.20, BETWEEN THE FWD AND AFT SPARS. CRACK EMANATES FROM THE FASTENER HOLES. RIB REPLACED IAW 128-6200-001.