What was found
LEFT HORIZONTAL STAILIZER INSPAR RIB ASSY #4 STIFFENER #2 LOWER CRACK NOTED. PERFORMED HFEC INSP ON STIFFENER#2 LOWER CHORD IAW B737 NDT P6 51-00-00 PROC.23; 2EA CRACKS NOTED. PERFORMED ROTO INSP ON STIFFENER#2 LOWER 8EA EXISTING HOLES IAW NDT P6 51-00-00 PROC.16; CRACKS NOTED ON 2EA HOLES. REMOVED CRACK HOLES RIB #4 STIFFENER #2 I/B AND O/B LOWER FLESH IAW B737 SRM 55-10-09-2R-REPAIR 5.; [04] VERIFIED STEP 3 (DAMAGE REMOVAL).; [05] PERFORMED HFEC INSP ON CUT OUT IAW B737 NDT P6 51-00-00 PROC.23; NO CRACKS