As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BEFORE TAKEOFF OF FLIGHT 1226, THE RUDDER BOOST ACTIVATED. THE CREW ABORTED THE TAKEOFF. THE SYSTEM WAS PUT ON MEL AND THE FLIGHT CONTINUED. ON 6/16 THE MECHANIC CLEARED THE MEL BY REPLACING A RELAY AND REPAIRING SOME CHAFED WIRES TO THAT RELAY. THE AIRCRAFT WAS RETURNED TO SERVICE WITH NO FURTHER DEFECTS.