What was found
CORROSION DETECTED DURING EXTERNAL ZONAL INSPECTION OF CENTER WING LOWER SKIN. ON CENTER WING BELLY FAIRING "FRAME" (PN: CC670-39204-1), AT FS 794.00. DISCREPANT AREA IS ON THE (FAIRING-TO-FRAME) MATING SURFACE, AROUND ALMOST EVERY NUT PLATE HOLE BETWEEN LBL 45.00 AND RBL 45.00, FLAGGED. C-CHECK RO 12/04/2020. COMPLIED WITH ALL STEPS OF REO FOR TEMPORARY REPAIR FOR CORROSION TO WING TO FUSE FAIRING FRAME FS 797.