What was found
POSSIBLE CRACK INDICATION LOCATED AT CHEM-MILL STEP BS 767+7.25 AT S-1. PERFORMED UTPA OF CRACK INDICATION AREA IAW B737 NDT PART 4; 53-30-07. FOUND SMALL RED DOT INDICATION ON S-SCAN DISPLAY WITH AN A-SCAN PERCENTAGE OF 74%. PERFORMED MFEC INSPECTION AT INDICATION AREA IAW B737 NDT PART 6; 53-30-18. (EXTERNAL) (NO REJECTING FAULT INDICATIONS FOUND WITH THIS PROCEDURE.). PERFORMED INTERNAL HFEC AT POSSIBLE CRACK INDICATION AREA IAW NDT PART 6; 53-30-20. (NO REJECTING FAULT INDICATIONS FOUND WITH THIS PROCEDURE.) PERFORMED INTERNAL HFEC AT POSSIBLE CRACK INDICATION AREA IAW B737 NDT PART 6; 51-00-00 PROCEDURE 23. (NO REJECTING FAULT INDICATIONS FOUND WITH THIS PROCEDURE.) PERFORMED UTPA OF CRACK INDICATION AREA IAW NDT PART 4; 53-30-07. THIS SETUP WAS USED USING THE MANUAL SPECIFIED 45 DEGREE MINIMUM ANGLE. THE DEFECT WAS NOTED AS HAVING A 69.5% A-SCAN AMPLITUDE; DEFECT ANGLE OF 51 DEGREE'S; SETUP GAIN OF 25DB AND A VISIBLE RED DOT AT CHEM-MILL STEP S-1; STA 767+7.25'.