What was found
L/H HORIZONTAL STABILIZER RIB #5 STIFFENER #2 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;[06] CUT OUT DAMAGED AREA AT L/H HORIZONTAL STAB RIB#5 STIFFENER<BR>#2 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 STAB RIB #5 STIFFENER #2 AND LOCATED DRILLED NEW HOLES SRM 55-10-09-2R-4 REPAIR 4 AND 51-40-05-0G-0;[09] VERIFIED STEPS 6 AND 8.<BR>OK TO TREAT AND PRIME.;[10] TREATED AND PRIMER NEW REPAIR PARTS AMM 51-21-72-370-804 AND AMM 51-21-41-370-802;[12] INSTALLED REPAIR AT L/H HORIZ STABILIZER RIB #5 STIFFENER#3 SRM 55-10-09-2R-4;