What was found
DURING C-CHECK EDDY CURRENT INSPECTION USING EDDY CURRENT PROBE TEST BLOCK TB-M030B AS A STANDARD, LT WING SPAR 3 UPPER O/B HOLE FOR TORQUE BOX 1 ATTACH REVEALED A CRACK. MX REAMED HOLE TO 8.382MM(.330) AND REINSPECTED. CRACK WAS NOT REMOVED. HOLE WAS REAMED TO 8.763MM (.345) AND REINSPECTED. CRACK FOUND TO BE REMOVED. SINCE 2ND OVERSIZE CORRESPONDING FASTENER TO REAMED HOLE SIZE, P/N AIC791-05011Y, IS NOT AVAILABLE. MX REAMED HOLE TO .377 - .378 (V-SIZE REAMER) AND INSTALLED MS21134-06011 USING TORQUE VALUES OF 175 IN-LB, (19.8 N-M). MX INSTALLED A WASHER (MS21299-C6) UNDER THE HEAD OF THE BOLT, AND WASHER (MS21299-6) AND NUT (MS21133-06). THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.