As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOFEATHER TEST FAILED. INTERROGATED CDS, FOUND FAULTS 30 AND 901 ON NR 1 ENGINE AND 456 CHA AND B NR 2 ENGINE. CLEARED FAULTS, FAULT 30 REMAINED ON NR 1 ENGINE. R & R NR 1 FADEC IAW AMM TASKS 73-21-01-000-801 AND 73-21-01-400-801, ALL FAULTS CLEARED. PERFORMED OPS TEST OF AUTOFEATHER AND UPTRIM SYS IAW AMM TASK 61-20-00-710-801. OPS TEST GOOD. NO FURTHER DEFECTS. RETURNED TO SERVICE.