As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER ENGINE START SMOKE IN REAR PART OF CABIN WAS REPORTED BY CABIN CREW. THE THIN WHITE SMOKE NEAR SIDEWALL AT ROW 20AC WAS ACCOMPANIED BY A SMELL LIKE BURNED PLASTIC. ON GROUND EMERGENCY WAS PERFORMED. EMERGENCY EVACUATION THROUGH FORWARD ENTRANCE DOOR WAS PERFORMED. LAMP HOLDER REPLACED AND AIRCRAFT RELEASED TO SERVICE.