What was found
LH WING CENTER FLAP RIBS UPR FLANGE FOUND 2EA CRACKS AT RIB17 BETWEEN STGR2.8 AND REAR SPAR，AND RIB19 BETWEEN STGR2.8 AND REAR SPAR COMPLIED WITH EA: 6-5750-T0385199 P1. TITLE: WING - FLIGHT SURFACES - LH CENTER FLAP CRACKS IN UPPER FLANGES OF RIBS 11, 16, 17, 19, 26 AND 27 AT STR. 2.7/2.8. REPAIRED THE LH WING CENTER FLAP RIBS UPR FLANGE 2EA CRACKS AT RIB17 BETWEEN STGR2.8 AND REAR SPAR，AND RIB19 BETWEEN STGR2.8 AND REAR SPAR. THIS IS CATEGORY A REPAIR. MAJOR REPAIR IAW FEDEX GMM6-2-100. SEE WRI 57506818 FOR WORK DETAILS.