As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REMOVED UPPER WINGS TO FACILITATE HOPPER REMOVAL. FOUND BOTH LEFT AND RIGHT UPPER WING REAR SPARS CRACKED AT ATTACH POINT IN UPPER RADIUS BETWEEN BOLT HOLE AND UPPER FLANGE OF SPAR. CRACKS ARE APPROXIMATELY .25 INCH LONG AND RAN UNDER MILLED FITTINGS, P/N'S A1050-101 AND A3090-13.