As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4772 CREW REPORTED THE SMELL OF BURNING WIRES COMING FROM RT SIDE PANEL LIGHTS AT ROWS 9 AND 10. SMELL GOES AWAY WHEN LIGHT ARE TURNED OFF. AIRCRAFT REMOVED FROM SERVICE. REMOVED AND REPLACED RT SIDE WALL BALLAST SEAT 10BC IAW EMB AMM 33-21-04, LIGHTS OPERATIONAL TEST GOOD. AIRCRAFT RETURNED TO SERVICE. (A)