As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED THAT ON CLIMB OUT, THEY RECEIVED A RUDDER OVER BOOST MSG. THE CREW RETURNED TO FIELD & LANDED WITHOUT FURTHER INCIDENT. REPLACED THE RUDDER SYS 1 PRESS SWITCH. OPERATIONAL CHECKS WERE GOOD WITH NO FURTHER DEFECTS NOTED.