As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SPARKS AND SMOKE REPORTED COMING FROM SEAT 1A/1B. MAINTENANCE FOUND SEAT WIRING HARNESS ROUTED INCORRECTLY AND PINCHED IN SEAT TRACK. REPAIRED WIRING HARNESS PER AMM CHAPTER 20, OPERATION NORMAL. ETOPS CATEGORY 'F': ANY OTHER EVENT DETRIMENTAL TO ETOPS