What was found
LH WING CENTER FLAP RIB UPPER FLANGE FOUND 3EA CRACKS AT RIB17, RIB18, RIB20 BETWEEN REAR SPAR AND STGR2.8 COMPLIED WITH EA 6-5750-T0379691 P1 REPAIRED THE LH WING CENTER FLAP CRACKED RIB UPR FLANGE AT RIB17, RIB18, RIB20 BETWEEN STGR2.8 AND REAR SPAR. TITLE: WING - FLIGHT SURFACES - LH CENTER FLAP CRACKS IN UPPER FLANGES OF RIBS 11, 13, 17, 18, 20, 26 AND 27 AT STR.2.7 /2.8- ALI 575306-01-1A. THIS IS CAT A REPAIR. MAJOR REPAIR IAW FEDEX GMM6-2-100. SEE WRI 57-50/6834 FOR WORK DETAILS.