As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) A NR OF GENERATOR CONTROL UNITS, FAILED FTP ON MFG PRODUCTION LINE. UNIT WILL NOT GO ONLINE AFTER BATTERY ISOLATION TEST AND COLD START FAULT CODE AF. AS DISCLOSED BY SAFRAN (LABINAL POWER SYSTEM, GCU SN 7010 TO 7167 ARE SUSPECT. AFFECTED UNITS ARE INSTALLED ON THE ACFT.