As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHEN CARRYING OUT GROUND TESTS, THE LT PROP WOULD NOT COME OUT OF FEATHER AND WHEN THE NR 2 FWD LOW FUEL PRESSURE INDICATOR LIGHT CAME ON THERE WAS AN UNCOMMANDED FREQUENCY SWAP OF NR 2 COMM. THE PROBLEM FOUND TO BE A SHORT IN THE GENERATOR INPUT/OUTPUT CARD (GIO), THE CARD WAS REPLACED WITH A NEW UNIT AND THE ACFT WAS GROUND RUN AND SYS CHECKED SERVICEABLE.