What was found
THE HPC 3-9 SPOOL IS REJECTED DUE TO CRACK INDICATION PER SB 72-812. INDICATION IS LOCATED ON STAGE 9 FORWARD FACE APPROXIMATELY 0.170 INCH FROM OUTSIDE DIAMETER AND APPROX 220 DEGREES FROM SERIAL NUMBER. INDICATION HAS A DEPTH OF 0.030 INCH AND DISPLAYS AN AMPLITUDE OF 50 PERCENT FSII AT 2416 DB. THE SURFACED AREA AROUND THE INDICATION EXHIBITED A RIPPLE EFFECT ON INITIAL INSPECTION. THE SURFACE WAS BLENDED TO A SMOOTH FINISH AND RE-INSPECTED WITH NO CHANGE TO THE INDICATION AMPLITUDE.