What was found
CRACK SUSPECTED AT RH HORIZONTAL STAB RIB 4 STIFFENER 4. CRACK CONFIRMED IAW B737 NDT PART 6 51-00-00 PROC.23. CUT OUT CRACKED AREA OF RIB 4 STIFFENER #4 IAW SRM 55-10-09-2R-4 FIG. 202 DETAIL A. PREFORMED HFEC INSP ON REWORKED REA. IAW NDT PART 6 51-00-00 PROCE 23. INDICATION CRACK FOUND DRILLED NEW PARTS IAW SRM 51-10-02-OG-0. APPLIED ALODINE & PRIME AT REPAIR IAW SRM 51-20-01-0G-0 & AMM 51-21-72-370-804;[14] VERIFIED TREATMENT APPLICATION.;[15] OK TO INSTALL REPAIR PARTS. (KIT);[16] INSTALLED REPAIR KIT # 55100003-01 AT R/H HORIZONTAL STAB. RIB#4 STIFFENER #4 AS PER B-737-700 SRM # 51-10-09-2R-4 FIG. 202 DETAIL A.