As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) RH NO4 POWER UNIT BURNT OUT CAUSING COMPLETE FAILURE TO THE RH CABIN LIGHTING CIRCUIT - INVERTER PNO 18-994 FOUND UNSERVICEABLE PROBABLY DUE TO THE FAILURE OF POWER UNIT - FOUND DURING INSPECTION IAW AD/ELECT/67 AND ALC IB 90-001