As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 3881 -FUMES/DE- DECLARED EMERGENCY ON DESCENT DUE TO BURNING RUBBER SMELL THROUGHOUT THE FLIGHT DECK AND CABIN. CORRECTIVE ACTION: FOUND STATIC INVERTER FAULT ON OVERHEAD PANEL. REPLACED SAME. REPLACED #1 TRANSFORMER RECTIFIER, START POWER UNIT, STANDBY POWER CONTROL UNIT AND BATTERY CHARGER PRECAUTIONARY. OPS CHECKS GOOD. (LP 4269546)