As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT NOT GROUNDED. DURING FLIGHT FROM LHR, A PASSENGER IN SEAT 8G PLUGGED IN HIS ELECTRONIC CHARGER INTO THE POWER PORT PRODUCING A POPPING NOISE AND A PUFF OF SMOKE. NO FURTHER SMOKE OR FIRE. OPERATIONAL CHECK IAW AMM 25-25-11 SATISFACTORY. (CLOSED)