As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOFEATHER TEST WILL NOT FINISH BOTH SIDES SHOW "A/F TEST ABORT". FOUND FAULT CODE IN CDS NR 2 PROP 30B. COMPLIED WITH FIM TASK 61-20-01-810-816. DETERMINED THE PEC HARD FAILED. R & R NR 2 PEC IAW AMM TASK 61-20-36-000-801, 61-20-36-400-801. OP'S CHECKED GOOD. COMPLIED WITH OP'S TEST OF PROPELLER AUTOFEATHER AND UP TRIM SYS IAW AMM TASK 61-20-00-710-801. OP'S CHECKED GOOD. RETURNED TO SERVICE.