B777-200
Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Critical; Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor
Flight Crew Overcame Equipment Problem; General Declared Emergency
Aircraft
Number 1 Flight Attendant called and stated that there were smoke and fumes in the mid to forward cabin. She stated that the fumes smelled like burning plastic and the fumes/smoke were increasing. She turned off the Power Ports and IFE switches. We declared an emergency with Center and started a level left turn toward ZZZ. We accomplished the Smoke; Fumes; Fire Checklist. The fumes and smoke immediately dissipated with the accomplishment of this checklist. Reconfirmed with a Flight Attendant Instructor and two pilots aboard via intercom that the problem was solved. Per the checklist and having stopped the source of fumes and smoke; we cancelled the Emergency and continued to destination. After reading the maintenance follow-up; it appears to have been the Upper Recirc fan.
B777 Captain is informed of smoke and fumes in the cabin by the Lead Flight Attendant and declares an emergency with ATC. The Smoke and Fumes Checklist is accomplished eliminating the problem and the flight continues to destination. The upper recirculation fan is thought to have been the source of the smoke.