What was found
LH HORIZONTAL STABILIZER RIB #5;STIFFENER 3 HAS CRACK. / [01] REMOVED CRACK AT LH HORIZONTAL STABILIZER RIB#5 STIFFENER 3 SRM51-10-02-G-0 AND 55-10-09-2R-4 REPAIR 4;[02] VERIFIED STEP 1;[03] PERFORMED HFEC INSP. ON CUTOUT IN WEB AREA OF THE L/H HORIZ. STAB. RIB #5 STIFF. #3 IAW B737 NDT PART 6 51-00-00 PROC. 23. NO CRACKS; EQUIP: NORTEC 600 B/C 166317 CAL DUE: 10/22;[04] RECEIVED NEW PARTS PO#1728471) LOCATED MEW PARTS AND DRILLER NEW HOLES AT LH HORIZONTAL STABILIZE RIB#5 STIFFENERS' #3 SRM 51-40-05-0ZG-0;[05] (CORRECTION STEP #1)CUT-OUT DAMAGE AT LH HORIZONTAL STABILIZER RIB#5 STIFFENER #3 SRM 51-10-02 AND 55)10-09-2R-4;[06] CORRECTION TO STEP # 1: CUTOUT CRACK AT LH HORIZONTAL STABILIZER RIB#5 STIFFENER 3. SRM 51-10-02-G-0 AND SRM 55-10-09-2R-4 REPAIR 4.;[07] VERIFIED STEPS 4 AND 6;[08] OK TO TREAT AND PRIME NEW HOLES;[09] TREATED AND PRIMED NEW HOLES AT L/H HORIZONTAL STAB RIB #5 STIFFENER 3. REF 51-20-01-0G-0 AND SRM 51-21-72-370-804;[10] OK TO INSTALL NEW REPAIR PARTS;[11] INSTALLED REPAIR PARTS AT LH HORIZONTAL STAB RIB 5 STIFFENER 3 SRM 55-10-09-2R-4 REPAIR 4;[12] VERIFIED STEP 11 -- INSTALLED REPAIR PARTS AT LH HORIZONTAL STAB RIB 5 STIFFENER 3 SRM 55-10-09-2R-4 REPAIR 4