As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: LEFT HORIZONTAL STAB LEADING EDGE CRACKED AT UPPER EDGE OF RIB LOCATED AT LE HSS 300.51. REMOVED AND REPLACED THE CRACKED RIB AT HSS 300.51 WITH A NEW SERVICEABLE RIB IAW AARD 51-00-05-1 PAR. 1 IAW DRAWING 186A1001.