What was found
LH WING CENTER FLAP RIBS UPR FLANGE FOUND 6EA CRACKS AT RIB16 BETWEEN STGR2.7 AND STGR2.8, RIB17 BETWEEN STGR2.8 AND REAR SPAR, RIB18 BETWEEN STGR2.8 AND REAR SPAR, RIB19 BETWEEN STGR2.7 AND REAR SPAR, RIB20 BETWEEN STGR2.8 AND REAR SPAR COMPLIED WITH EA 6-5750-T0386614 REPAIRED THE LH WING CENTER FLAP RIB UPR FLANGES 6EA CRACKS OF RIB16, 17, 18, 19 AND 20 BETWEEN STGR2.7 AND REAR SPAR. TITLE: WING - FLIGHT SURFACES - LH CENTER FLAP CRACKS IN UPPER FLANGES OF RIBS 11, 15, 16, 17, 18, 19, 20, 25, 26 AND 27 AT FRONT SPAR AND STR 2.7 / 2.8. THIS IS A CAT A REPAIR. MAJOR REPAIR IAW FEDEX GMM 6-2-100. SEE WRI 57507285 FOR WORK DETAILS.