What was found
RT HORIZONTAL STAB HAS A CRACK AT RIB NR 4 BS 120.3 ON STIFFENER NR 4 BOTTOM. CUT DAMAGE AT RIB NR 4 ON STIFFENER NR 4; PERFORMED HFEC INSP ON CUT OUT AT THE VERTICAL NR 4 STIFFENER AND WEB AT NR 4 RIB AND ROTO INSP ON EXISTING FASTENER HOLES ON VERTICAL STIFFENER NR 4. NO FOUND CRACKS IAW NDT/NTM PART 6 51-00-00 PROCEDURE 23 AND 16; TREATED; PRIMED AREA AND INSTALLED A REPAIR IAW B737-700 SRM 55-10-09-2R-4 REPAIR 4.