As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: RH HORIZONTAL STABILIZER REMOVABLE LEADING EDGE - CRACK AT THE EDGE OF THE RIB AT LE STA 114.55. MAINTENANCE REPLACED THE CRACKED RIB AT STA. 114.55 WITH A NEW SERVICEABLE RIB I.A.W. B-737 NG AARD CH. 50-00-05-1 PAR.1 PER DRAWING 186A1001.