What was found
HORIZONTAL STAB RIB #4 AFT STIFFENER IS CRACKED AT LOWER RADIUS. (STAB STA 120.3; MARKED)<[01] VERIFIED APPLICABILITY OF SRM 55-10-09-2R-4 REPAIR 4.;[02] VERIFIED APPLICABILITY OF SRM 55-10-09-2R-5 REPAIR 5.;[03] UPDATED STEP 3.;[04] VERIFIED STEP 2.;[05] REMOVED CRACK DAMAGE ON HORIZONTAL STABILIZER RIB #4 (STAB STA 120.30) AFT VERTICAL STIFFENER LOWER RADIUS AND INSTALLED REPAIR IAW SRM 55-10-09-2R-5 REPAIR 5.;[06] VERIFIED CORRECTIVE ACTION COMPLETE WITH STEPS; AND MEASUREMENT TABLE VERIFIED.