A B777 diverted while enroute because a galley oven overheated causing smoke and intense heat. The f...

Narrative:

Start; taxi; and takeoff were normal. One hour forty-five minutes into the flight; a flight attendant from the aft galley called to say there was smoke and an electrical smell coming from one of the ovens (9C). As we were talking on the inter-phone she said she could see a bright red glow on the side of the oven and felt intense heat. A halon extinguisher was discharged into the oven. All of the ovens were turned off along with the cabin utility switch in the cockpit. The first officer went to the aft galley and confirmed that the one oven was extremely hot and glowing. An emergency was declared with havana center with an immediate divert to an airport which was approximately 115 miles away. Fuel burn was started with 163;000 pounds and terminated with 90;000 pounds. An overweight landing was accomplished at 473;000 pounds. Touchdown and sink rate were normal. The smoke; fire or fumes checklist along with all normal were checklists were accomplished. The heat in the oven had subsided by the time we landed and we taxied to parking.

Original NASA ASRS Text

Title: A B777 diverted while enroute because a galley oven overheated causing smoke and intense heat. The Flight Attendants used PBE's and discharged Halon Fire Extinguishers on the equipment.

Narrative: Start; taxi; and takeoff were normal. One hour forty-five minutes into the flight; a Flight Attendant from the aft galley called to say there was smoke and an electrical smell coming from one of the ovens (9C). As we were talking on the inter-phone she said she could see a bright red glow on the side of the oven and felt intense heat. A halon extinguisher was discharged into the oven. All of the ovens were turned off along with the cabin utility switch in the cockpit. The First Officer went to the aft galley and confirmed that the one oven was extremely hot and glowing. An emergency was declared with Havana Center with an immediate divert to an airport which was approximately 115 miles away. Fuel burn was started with 163;000 LBS and terminated with 90;000 LBS. An overweight landing was accomplished at 473;000 LBS. Touchdown and sink rate were normal. The Smoke; Fire or Fumes checklist along with all normal were checklists were accomplished. The heat in the oven had subsided by the time we landed and we taxied to parking.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	854343
Time
Date	200909
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZZ.ARTCC
State Reference	FO
Environment
Light	Night
Aircraft 1
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Route In Use	Oceanic
Flight Plan	IFR
Component
Aircraft Component	Galley Furnishing
Person 1
Function	Pilot Flying Captain
Person 2
Function	Relief Pilot
Events
Anomaly	Aircraft Equipment Problem Critical Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor

A B777 diverted while enroute because a galley oven overheated causing smoke and intense heat. The flight attendants used pbe's and discharged halon fire extinguishers on the equipment.