As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOFEATHER FAILED TO ARM DURING TAKEOFF. INTERROGATED CDS AND FOUND EMV FAULT CODES 204A+B. PLA STUCK ON, PERFORMED FIM TASK 61-20-05-810-819, NOTED THAT PLA HIGH & LOW SWITCHES CHANGE STATE FROM REVERSE TO RATING. PERFORMED TEST OF AUTOFEATHER SYSTEM ENGINES OFF IAW MM TASK 61-20-00-710-801 OPS GOOD. PERFORMED HIGH POWER GROUND RUN AND NOTED THAT AUTOFEATHER ARMS AT POWER. REPEATED NUMEROUS TIMES OPS CHECKS GOOD. EMU FAULTS DID NOT RETURN. RETURNED TO SERVICE.