As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG BURNING ODOR COMING FROM APPROXIMATE LOCATION OF ROW 44 FG FLOOR LEVEL. INSPECTED AREA AROUND 44 FG SUSPECT ROCKWELL COLLINS ENTERTAINMENT SYSTEM SEAT BOX CHECK ROCKWELL AVU - UPCUS AND WIRING. NO HEATING OR BURN SMELL ON COMPONENTSSYSTEM WORKS FINE. PERFORMED ROCKWELLCOLLINS CONFIDENCE CHECK. ALL NORMAL. UNABLE TO DUPLICATE PROBLEM. CONTINUE TO MONITOR SYSTEM.