What was found
L/H HORIZONTAL STABILIZER RIB #4 UPPER FLANGE HAS ( 1 EACH) HOLE ELONGATED. / [01] TRIMMED ONE EACH HOLE ON FLANGED PER REFERENCE SRM 51-10-02-0G-0.;[02] VERIFIED STEP 1.;[03] PERFORMED HFEC INSP ON CUT OUT AREA IAW B737 NDT P6 51-00-00 PROC.23; NO CRACKS<BR>TOOL USED : NORTEC 600 B/C 172389 CALDUE: 03/23;[04] PERFORMED ROTO INSP ON EXISTING HOLES IAW B737 NDT P6 51-00-00 PROC.16; NO CRACKS<BR>TOOL USED : NORTEC 600 B/C 166317 CALDUE: 10/22;[05] PERFORMED ROTO INSP ON EXISTING HOLES LOCATED AT L/H HORIZ STAB RIB#4 SKIN REPAIR AREA IAW B737 NDT P6 51-00-00 PROC.16; NO CRACKS<BR>TOOL USED : NORTEC 600 B/C 166317 CALDUE: 10/22;[06] PERFORMED COUNTERSINK INSP ON EXISTING COUNTERSUNK HOLES LOCATED AT L/H HORIZ STAB RIB#4 SKIN REPAIR AREA IAW B737 NDT P6 53-30-00 PROC.3; NO CRACKS<BR>TOOL USED : NORTEC 600 B/C 166317 CALDUE: 10/22;[07] PERFORMED DVI INSP. ON REPAIR ON L/H HORZ. STAB.<BR>ON RIB #4 UPPER FLANGE.;[08] DUE TO MANY DAMAGE ON RIB # 4; RIB NEED TO BE REPLACE; ORDERED NEW RIB P/N 182A5304-3; NEW RIB INSTALLED ON CUSTOMER BAR CODE TTG8Q00EELDP;[09] VERIFIED 8