As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A CRACK WAS IDENTIFIED AT THE RT SIDE OF LWR FWD CARRYTHROUGH SPAR CAP AFT MOST IB FASTENER LOCATION WHILE PERFORMING NDT PROCEDURE AS AMOC FOR AD2018-03-03R1. THE CRACK WAS CONFIRMED WITH BOLT HOLE EDDY CURRENT AFTER THE FASTENER WAS REMOVED. CRACK DIRECTION IS AFT AND MEASURES APPROXIMATELY 0.25". THE WING JOINT FITTING ASSOCIATED WITH THESE FASTENER LOCATIONS WAS REPLACED WITH AN OEM PART AND HAS ACCUMULATED 2281.6 HOURS SINCE INSTALLATION.