As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - NR 2 PROPELLER WON'T FEATHER DURING THE AUTOFEATHER TEST. MAINTENANCE REPLACED NR 2 AUTOFEATHER TEST CIRCUIT RELAY 6121-K4. TESTED AUTOFEATHER SYSTEM TEST SEQUENCE PER AMM D & O 61-26-00, PAGE 9-11, PARAGRAPH F. TEST CIRCUITS AND AUTOFEATHER SYSTEM FUNCTIONED NORMALY. AIRCRAFT RETURNED TO SERVICE.