What was found
L/H HORIZONTAL STABILIZER RIB #5 STIFFENER #3 LOWER FLANGE; WITH A CRACK. STAB. STA-129.50 / [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] CUT OUT DAMAGED AREA AT L/H HORIZONTAL STAB RIB#5 STIFFENER<BR>#3 LOWER FLNGE STA 129.50 ASPER B737-700 SRM55-10-09-2R-4-A01101 REPAIR #4;[03] VERIFIED STEP 2.;[04] PERFORMED HFEC INSP ON RIB STIFFENER #3 WEB AREA IAW B737 NDT P6 51-00-00 PROC.23; CRACK REMAINS.<BR>TOOL USED : NORTEC 600 B/C 172389 CALDUE: 03/23;[05] PERFORMED ROTO INSP ON 4EA EXISTING HOLES IAW B737 NDT P6 51-00-00 PROC.16; CRACK NOTED ON 1EA HOLE (MARKED)<BR>TOOL USED : NORTEC 600 B/C 172389 CALDUE: 03/23;[06] CUT OUT DAMAGED AREA AT L/H HORIZONTAL STAB RIB#5 STIFFENER<BR>#3 LOWER FLNGE STA 129.50 ASPER B737-700 SRM55-10-09-2R-4-A01101 REPAIR #4;[07] PERFORMED HFEC INSP ON CUT OUT AREA IAW B737 NDT P6 51-00-00 PROC.23; NO CRACKS NOTED<BR>TOOL USED : NORTEC 600 B/C 172389 CALDUE: 03/23;[08] FABRICATED REPAIRS PARTS AT L/H HORIZONTAL STABILIZER RIB #5 STIFFENER#3 SRM 55-10-09-2R REPAIR 4;[09] LOCATED AND DRILLED NEW REPAIR PARTS SRM 51-40-05-0G-0;[10] VERIFIED STEPS 6; 8 AND 9.<BR>OK TO TREAT AND PRIME.;[11] TREATED AND PRIMER NEW REPAIR PARTS AMM 51-21-72-370-804 AND AMM 51-21-41-370-802;[12] VERIFIED STEP 10.<BR>OK TO INSTALL REPAIR.;[13] INSTALLED REPAIR AT L/H HORIZONTAL STAB RIB #5 DTIFFENE #3 SRM 55-10-2R-4