What was found
CRACK INDICATION FOUND APPROXIMATELY 0.25" IN LENGTH DURING ULTRASONIC INSPECTION AT RIGHT HAND SIDE UPPER SPAR ASSEMBLY (TAIL PYLON) STATION YID 408.500 ON THE VERTICAL FLANGE OF THE UPPER CAP. CRACK AREA AT RIGHT HAND SIDE UPPER SPAR ASSEMBLY (TAIL PYLON) STATION YID 408.500 ON THE VERTICAL FLANGE OF THE UPPER CAP REPAIRED, AS PER EA 1-5451-T0357564 PART 1. TITLE: "NACELLES/PYLON-TAIL PYLON/STRUT-CRACK FOUND ON UPPER AFT SPAR RT VERTICAL FLANGE AT STA YID 408.500-ALI PSE 54.52.01.1 INSPECTION" WORK INSTRUCTIONS. REPAIR CLASSIFIED AS MAJOR, PER GMM 6-2-100.