What was found
1EA CRACK (6 MM) WAS FOUND AT RH WING CENTER FLAP RIB 27 AFT AREA OF TOP SURFACE RIB FLANGE. ACCOMPLISHED THE FLANGE REPAIR AT RIB27, S-2.7~2.8 AND EXTERNAL DOUBLER REPAIR AT RIB26~27, S-2.2~2.1 I.A.W FEDEX EA NO:T6-5750-T0380123 P1, SEQ NO:762, TITLE:WINGS-FLIGHT SURFACES-RH CENTER FLAP-CRACKS IN UPPER FLANGES OF RIB 12 AND 27-ALI 575306-01-1A. THE REPAIR CLASSIFIED AS CAT.A MAJOR PER GMM 6-2-100.