As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY POWER LIGHT ON WHEN USING BATT POWER. REMOVED AND REPLACED EMERGENCY POWER PACK AND DC TO DC CONVERTER IAW COLGAN WORK CARD 24-35-02S, OPS CHECK GOOD. P/N OFF/ON EMERG POWER PACK 501-1228-04, S/N OFF 5378, S/N ON 10381 CERT DATE: 8-8-2006.