What was found
DURING 826AX MOD-DISCOVERED STATION 857, RBL 46 HAS PREVIOUS GRIND-OUT FROM CORROSION REMOVAL, APPROXIMATELY 4 INCHES BY 6 INCHES. REPAIRED CENTER WING, UPPER SKIN AT AFT SPAR RBL 46.000 THAT HAD A PREVIOUS GRIND OUT IAW ABX REA D857-12854MR.