As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTOFEATHER WILL NOT ARM WITH ENGINES RUNNING. SLAVED IN AUTO CONTROL BOX NO FIX. RECONNECTED ORIGINAL AUTO FX CONTROL BOX. RAN ACFT & CHECKED ARMING LEVEL GRAPH FOR AUTO FX AT 20 DEG C. AUTO FX WILL NOT ARM BELOW 32 DEGREES. SYS OPS CHECKED GOOD, OK ON GND RUN, OK FOR SERVICE.