What was found
LH WING CENTER FLAP RIB UPPER FLANGE FOUND 2EA CRACKS AT RIB13 BETWEEN STGR2.6 AND STGR2.7 & RIB15 BETWEEN STGR2.7 AND STGR2.8. COMPLIED WITH EA 6-5750-T0377102 A P2 TO REPAIR THE LH WING CENTER FLAP RIB UPPER FLANGE 2EA CRACKS AT RIB3 BETWEEN REAR SPAR AND STGR2.8 & BETWEEN STGR2.6 AND STGR2.7. EA TITLE: WINGS - FLIGHT SURFACES - LH CENTER FLAP, CRACKS IN UPPER FLANGES OF RIBS - REPAIR. THIS IS A CATEGORY A REPAIR. MAJOR REPAIR IAW FEDEX GMM 6-2-100. SEE WRI 57509788 FOR WORK DETAILS.