What was found
R/H HORIZONTAL STABILIZER RIB #4 STIFFENER #4 LOWER FLANGE WITH A CRACK. / [01] PERFORMED HFEC INSP ON RIB STIFFENER LOWER FLANGE IAW B737 NDT P6 51-00-00 PROC.23; CRACK CONFIRMED.<BR>TOOL USED : NORTEC 600 B/C 172389 CALDUE: 03/23;[02] CUTOUT THE DAMAGE AREA AT RH HORIZONTAL STAB RIB #4 STIFFENER #4 SRM 55-10-09-2R-4;[03] VERIFIED STEP1 AND 2;[04] PERFORMED HFEC AT CUT OUT AS PER NDTM PART 6; 51-00-00 PROCEDURE 23. NO CRACKS<BR>[NORTEC 600 ; B/C 166316 ; CALIB.DUE- 10/22];[05] LOCATED NEW REPAIR PARTS AND DRILLED NEW HOLES SRM 51-40-05-0G-0;[06] VERIFIED STEP 5.<BR>VERIFIED NICKS; SCRATCHES; GOUGES; BURRS AND SHARP EDGES REMOVED.<BR>OK TO TREAT AND PRIME.;[07] TREATED AND PRIME AREA REPAIRS AND NEW HOLES AMM 51-21-72-370-804 AND 51-21-41-370-802;[08] VERIFIED STEP 7.<BR>OK TO INSTALL REPAIR.;[09] INSTALLED REPAIR PARTS. AT RH HORIZONTAL STAB RIB #4 SRM 55-10-09-2R-4;[10] VERIFIED STEP 9.;[11] APPLIED FILLET SEAL AT RH HORIZONTAL STAB RIB #4 TO THE REPAIR PARTS.<BR>REF. B737-700. SRM-55-10-09-2R-4. STEP 4/Q.;[12] VERIFIED STEP # 11;[13] JOB IS COMPLETE;[14] JOB IS COMPLETE