As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A DAILY SYSTEMS CHECK, AUTOFEATHER FAILED MESSAGE FOR THE LEFT ENGINE AND ABORT MESSAGE FOR THE RIGHT ENGINE. REMOVED FROM SERVICE. CHECKED CDS FOUND FAULT CODE 398 B. COMPLIED WITH FIM 61-20-00-810-805. COMPLIED WITH NR 1 PEC. REMOVED AND REPLACED IAW AMM 61-20-36-000-801, AND 400-801. ALL POST RUNS AND TEST COMPLIED WITH AND GOOD RESULTS. AUTOFEATHER UP TRIM TEST NOW PASSES. AIRCRAFT RETURNED TO SERVICE.