What was found
R/H HOR. STAB AT INSPAR RIB ASSY NO. 4 AT STAB STA 120.30 STIFFENER NO. 2 WITH A CRACK ; / [01] CUT OUT DAMAGED AREA AT STIFFENER #2 PER SRM 55-10-09-2R-4; [02] PERFORMED ROTO INSP ON 8EA FASTENER HOLES AT STIFFENER#2 IAW B737 NDT P6 51-00-00 PROC.16; NO CRACKS <BR>TOOL USED NORTEC 600 BC:166316; [03] PERFORMED HFEC INSP ON CUT OUT AREA IAW B737 NDT P6 51-00-00 PROC.23; NO CRACKS <BR>TOOL USED NORTEC 600 BC:166316; [04] VERIFIED STEP 1; [05] ACCOMPLISHED GVI REF SRM 55-10-09-2R-4 STEP 4E. NO OTHERS DISCREPANCIES NOTED; [06] CHECKED ROUGHNESS FOR THE CUT EDGES; INITIAL AND REPAIRS PARTS. THEY ARE SMOOTHER OF 63 MICROINCHES RA; [07] ROUGHNESS KIT B/C 171854; [08] DRILLED ANGLE AND T DOUBLER AND FILLER ON RIB #4 STIFFENER #2 AT THE RIGHT HAND HORZ STAB. STA. 120.30 AS PER SRM 55-10-09 -2R-4;IFFENER NO. 2 IN REF SRM 55-10-09-2R-4 REPAIR 4 AND SRM 51-40-02.; [19] VERIFIED STEP 18