As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THAT DURING FLIGHT THE "RUDDER BOOST FAIL" ANNUNCIATOR ILLUMINATED AND REMAINED ON. MAINTENANCE TROUBLESHOT THE DISCREPANCY AND VERIFIED THE REPORT AND FOUND THAT THE NO. 2 FLIGHT CONTROL COMPUTER (FCC) FAILED. AN OVERHAULED FCC WAS INSTALLED AND RUDDER BOOST FUNCTIONAL CHECKS WERE SATISFACTORY. THE AIRCRAFT WAS RETURNED TO SERVICE.