What was found
SEAT 8A REPORTED WITH SMOKE IN AREA. CREW USE EMERGENCY FIRE EQUIPMENT AND DECLARE EMERGENCY PROCEDURE ON GROUND LHR. FOUND ELECTRONIC EQUIPMENT (KINDLE NOTEBOOK) WEDGED IN SIDE OF SEAT CRUSHED WITH SMOKE DAMAGE. REMOVED DEBRIS, INSPECTED SEATS 8AB. CHECKED ELECTRONIC SEAT CONTROLS AND ASSOCIATED CABLES, NO DAMAGE NOTED. OPERATED SEAT ALL FUNCTIONS NORMAL. REPLACED UNPACKED BUT NOT USED SMOKEHOOD BROKEN SEALED EXTINGUISHER BOTTLES AND EMERGENCY TORCH AND SEAL. REPLACED SEAT COVERS AND AREA VACUUMED AND DEODORIZED.