As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE INSIDE THE HANGAR FOR UNRELATED MAINTENANCE THE RIGHT WING INBOARD FUEL DRAIN EJECTED ITS' CORE FROM THE DRAIN VALVE BODY, LEADING TO UNCONTROLLED FUEL LOSS. PART NUMBER 440200. NO CONTACT WITH THIS COMPONENT WAS MADE PRIOR TO THE INCIDENT.