As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT STUB WING SPAR 3 SHOWS A CRACK INDICATION AT THE FASTENER REPLACEMENT HOLE. PERFORMED PERMANENT REPAIR OF RT WING STUB SPAR 3 BY REAMING UNTIL CRACK INDICATION WAS REMOVED AND INSTALLING FABRICATED FREEZE PLUGS REF ETD2016-170-039973.