As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAJOR:CRACK ON RIB 12A INTERNALLY RH HORIZONTAL STAB BETWEEN MID SPAR AND FRONT SPAR, LOWER RIVET ROW AFT OF 6TH RIVET FROM FRONT SPAR. REFER H6968 TASK CARD #3100:170EO-55-10-0004_1 AND SEQ #3100 FOR LEFT AND RIGHT HSTAB RIB 10A, 11A & 12A REPLACEMENT. SEE EAMS W/O H6968 SN 372 FOR WORK DETAILS. AIRCRAFT REMAINS IN HEAVY CHECK BNA.