As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HORIZONTAL STABILIZER WAS REMOVED FOR THE REPLACEMENT OF AFT REINFORCEMENTS. THE BULKHEAD ASSEMBLY PN1212133-1 WAS NOTICED TO BE CRACKED AT LEFT AFT RELIEF CUTOUT, JUST FORWARD OF THE HORIZONTAL STABILIZER AFT ATTACHMENT. CRACK WAS ABOUT .3750 INCH LONG. PN 12121335 IS THE REPLACEMENT BULKHEAD ASSEMBLY NUMBER.