As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L/H HORIZONTAL STABILIZER , SUSPECTED CRACK FOUND ON RIB 10 UPPER FLANGE. MAJOR. CRACK CONFIRMED ON LH H-STAB RIB 10 UPPER FLANGE. SEE AWS AND NDT REPORT TW038274-9 FOR DETAILS. REPLACED RIB 10 ON TASK CARD 170EO-55-10-0004_1. NO FURTHER ACTION REQUIRED