As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:NA**SUPPLEMENTAL SDR** AC EMER ON INV. LIGHT DOES NOT ILLUMINATE WHEN ACFT ON BATTERY POWER. NO AC EMERGENCY BUS ITEMS ARE POWERED. TRANSFERRED TO NRC 205571REMOVED AND INSTALLED STATIC INVERTER IAW AMM 24-24-11-0401. PERFORMED SATISFACTORY OPS CHECK IAW AMM 24-24-00-0501.