As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: RIGHT HAND HORIZONTAL STABILIZER LOWER SKIN HAS VISUAL CRACK INDICATION ALONG THE RIB LINE AT STAB STA 129.50 LOCATED 16 INCHES FROM THE FRONT SPAR. INSTALLED DOUBLER AND FILLER. PER BOEING 737-NG SRM 55-10-01-2R-1.