As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - THE "RUD FULL PRESS" CAUTION LIGHT ILLUMINATED DURING CRUISE FLIGHT, FOLLOWED IMMEDIATELY BY THE "RUD PRESS" CAUTION LIGHT. COMPLETED EMERGENCY AND ABNORMAL CHECKLIST FOR BOTH LIGHTS. MAINTENANCE REPLACED RUD FULL PRESS SWITCHES NO HELP. TROUBLESHOT TO RUD PRESS REGULATOR. REPLACED PER AMM 27-20-38, PAGES 401-405. OPERATIONAL TEST GOOD. AIRCRAFT RETURNED TO SERVICE.