What was found
L/H HORIZONTAL STAB RIB 6 #3 STIFFENER LOWER RADIUS IS CRACKED.<[01] REMOVED THE DAMAGED PART AT LH HORIZONTAL STABILIZER STA 129.50 RIB 3RD VERTICAL STIFFENER IAW SRM 55-10-09-2R-4;[02] HFEC REQUEST ON THE CUTOUT EDGES; WEB AND EXISTING FASTENERS HOLES WITHIN THE REPAIR AREA TO ENSURE NO CRACKS EXIST.;[03] VERIFIED CORRECTIVE ACTION STEP 1.;[04] ACCOMPLISHED HFEC SURFACE SCAN IAW 737 NDTM PART 6 CHAPTER 51-00-00 PROCEDURE 23. NO CRACKS NOTED.<BR><BR>ACCOMPLISHED HFEC OPEN HOLES IAW 737 NDTM PART 6 CHAPTER 51-00-00 PROCEDURE 16. NO CRACKS NOTED.<BR><BR>EQUIPMENT USED: <BR>-NORTEC 600 ID: ATS2353 CAL DUE: 01/23 <BR>-MINIMITE ID: ATS1411 CAL DUE: 07/23;[05] PERFORMED GVI OF ALL AREAS WITHIN THE REPAIR AREA NO DEFECTS NOTED IAW SRM 55-10-09-2R-4;[06] FABRICATED REPAIR PARTS (1) T-SECTION FROM 60-5872 7075 T76511 LOT# 1463618-1 (2) ANGLE FROM BAC 1490-2793 7075 T62 CLAD LOT# 1477816-1 (3) SHIM FROM 7075 T6 0.020' CLAD LOT# 1381332-1; APPLIED CHEMICAL CONVERSION COATING IAW SRM 55-10-09-2R-4 OK TO PRIME.;[07] VERIFIED CORRECTIVE ACTION STEP 5. NO DEFECTS NOTED.;[08] VERIFIED CORRECTIVE ACTION STEP 6. VERIFIED OK TO PRIME.;[09] PRIMED REPAIR PARTS AND COMMON AREA IAW SRM 55-10-09-2R-4 OK TO INSTALL.;[10] VERIFIED CORRECTIVE ACTION STEP 9. VERIFIED OK TO INSTALL.;[11] INSTALLED REPAIR PARTS AT LH HORIZONTAL STABILIZER STA 129.50 RIB 3RD VERTICAL STIFFENER IAW SRM 55-10-09-2R-4