What was found
LEFT HORIZONTAL STAB INSPAR RIB, HSS 129.50, 4TH VERTICAL STIFFENER WAS CRACKED. ACCOMPLISHED HFEC OPEN HOLE AND CUT OUT INSPECTION NO CRACK NOTED IAW NDTM PART 6; 51-00-00, PROCEDURE 16 & 23. ACCOMPLISHED GVI OF ALL AREAS WITHIN REPAIR AREA, INCLUDING UNDERLYING STRUCTURE, NO DEFECTS NOTED IAW SRM 55-10-09-2R-4, STEP 4E. FABRICATED A REPAIR, LOCATED AND DRILLED IAW SRM 55-10-09-2R-4, REPAIR 4, REPAIR INSTRS 4F - J. TREATED AND PRIMED THE REPAIR IAW SRM 55=10-09-2R-4, REPAIR 4, REPAIR INSTRS 4K & L. INSTALLED THE REPAIR. IAW SRM 55=10-09-2R-4, REPAIR 4, REPAIR INSTRS 4M -R. FOR LH HAND HORIZONTAL INSPAR RIB AT STAB STA 129.50.