As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOFEATHER SYSTEM TEST FAILED DURING DAILY SYSTEMS CHECK. REMOVED FROM SERVICE. INTERROGATED CDS AND FOUND F/C 70A, 398A, 494A/B ON BOTH PROPS, ALL RELATED TO AUTOFEATHER TEST. CLEARED F/C REF Q400 AMM 61-20-36-070-801. PERFORMED AUTOFEATHER TEST REF Q400 AMM 61-20-00-710-810. OPS TEST PASSED, F/C'S DID NOT RETURN. RETURNED TO SERVICE.