What was found
CENTER WING BOX - REAR SPAR LOWER FLANGE FR47 RHS HOLE "G" FOUND CRACK SIGNAL COMPLIED WITH EA: 6-5710-150047 E P7 REPAIRED THE CENTER WING BOX REAR SPAR LOWER FLANGE FR47 RHS CRACKED HOLE "G". TITLE: WINGS - CENTER WING BOX - REAR SPAR LOWER FLANGE AT FRAME 47. THIS IS CAT B REPAIR AND THE RDAF REPRESENTS A STAGE 1 APPROVAL FOR STATIC STRENGTH ANALYSIS AND AWAITING FURTHER DT APPROVAL. THIS REQUIREMENT WILL BE TRACKED BY ENMDS TO OBTAIN STAGE 2 AND/OR STAGE 3 APPROVAL WITHIN 6 MONTHS. MAJOR REPAIR IAW FEDEX GMM6-2-100.SEE WRI 57106846 FOR WORK DETAIL.