What was found
RT WING CENTER FLAP RIB UPPER FLANGE FOUND CRACKED AT RIB13 BETWEEN STGR2.7 AND STGR2.8 COMPLIED WITH EA 6-5750-T0378134 P1 REPAIRED THE RH WING CENTER FLAP CRACKED RIB UPPER FLANGE AT RIB13 BETWEEN STGR2.7 AND STGR2.8. TITLE: WING - FLIGHT SURFACES - RH CENTER FLAP CRACKS IN UPPER FLANGES OF RIBS 13 AND 21 AT STR. 2.7, RIBS 18 AT STR. 2.8 AND RIB 25 THRU 27 AT STR. 2.7 AND 2.8 - ALT 575306-01-1A. THIS IS CAT A REPAIR. MAJOR REPAIR IAW FEDEX GMM6-2-100.SEE WRI 57-50/FOR WORK DETAILS.