What was found
1.1EA CRACK (5MM) WAS FOUND AT L/H WING CENTER FLAP RIB11 AFT AREA OF TOP SURFACE RIB FLANGE. 2.1EA CRACK (5MM) WAS FOUND AT L/H WING CENTER FLAP RIB12 AFT AREA OF TOP SURFACE RIB FLANGE. 3.1EA CRACK (25MM) WAS FOUND AT L/H WING CENTER FLAP RIB19 AFT AREA OF TOP SURFACE RIB FLANGE. ACCOMPLISHED RIB FLANGES REPAIR AT RIB 11, S-2.7~S-2.8, RIB 12, S-2.7~S-2.8 AND RIB 19, S- 2.8~REAR SPAR AND EXTERNAL DOUBLER REPAIR AT RIB11~12, S-2.1~S-2.2 AND RIB 18~19, S- 2.1~REAR SPAR I.A.W FEDEX EA NO:6-5750-T0379637 P1, SEQ NO:774 TITLE: WINGS - FLIGHT SURFACES - LH CENTER FLAP - CRACKS IN UPPER FLANGES OF RIBS 11, 12 AND 19 THE REPAIR CLASSIFIED AS CAT A MAJOR PER GMM 6-2-100.