What was found
L/H HORIZONTAL STABILIZER MOVEABLE L/E FAIRING RIB 4 CRACKED @ EDGE MKD DOT / [01] PERFORMED HFEC INSP ON L/H HORIZ STAB MOVEABLE L/E FAIRING RIB#4 IAW B737 NDT P6 51-00-00 PROC.23; CRACK NOTED (CRACK LENGTH 0.250')<BR>TOOL USED : NORTEC 600 B/C 172389 CALDUE: 03/23;[02] REMOVED RIB 4 AT L/H HORIZONTAL STABILIZER PER.REF. B-737-7 SRM 51-40-02-0G;[03] PERFORMED HFEC HOLE PROBE INSPECTION ON ALL REMOVED FASTENER LOCATIONS IAW NDTM PART 6; 51-00-00; PROCEDURE 16. NO CRACKS. [NORTEC 600 ; B/C 166316 ; CALIB.DUE- 10/22];[04] PERFORMED HFEC COUNTERSINK INSPECTION ON ALL REMOVED FASTENER LOCATIONS IAW NDTM PART 6; 53-30-00; PROCEDURE 3. NO CRACKS. [NORTEC 600 ; B/C 166316 ; CALIB.DUE- 10/22];[05] VERIFIED AND INSPECTED STEP#2.;[06] OK TO INSTALL RIB 4.;[07] REPLACED RIB #4 PN 186A1304-1 AT L/H HORIZ. STAB. L/E FAIRING PER B737-700 SRM 51-40-02-0G-0;[08] VERIFIED AND INSPECTED STEP#7;[09] MEASUREMENTS INPUT AND PARTS TRANSACTION ONLY;[10] VERIFIED STEP#9;[11] VERIFIED AND INSPECTED.