B777 flight crew reported a galley fire that resulted in an air return and overweight landing.

Attributes
ACN	1694023
Time
Date	201910
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	CA
Aircraft 1
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	Galley Furnishing
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 122 Flight Crew Total 14554 Flight Crew Type 9436
Person 2
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Weight And Balance Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor

Narrative:

On climb out we got a call from the aft galley flight attendant smoke coming out of the ovens. I asked the international relief officer to run back and check out if the smoke was burning food trays or something else. When she called back all ovens were pouring out smoke and they were in the process of de-powering the galleys. I gave the aircraft to the first officer and [requested priority handling]. Aircraft X turning back to ZZZ with an onboard fire. I got the international relief officer back up and we coordinated an [expedited return.] dispatch was notified; ATC was helping us in; flight attendants were briefed; and passengers briefed. We completed over weight checklist and had crash fire rescue in place for a long landing and possible bailout. I told the flight attendants to empty every halon bottle in the airplane. Smoke dissipated but returned after 15 minutes. I took control of the aircraft and flew an overweight landing to runway xx; rolled to the end; turned off and were greeted by crash fire rescue. We were given a frequency for the fire crew and they checked us out as nominal. Since the smoke was dissipating we decided to get to the gate and let the fire crew on board.

Original NASA ASRS Text

Title: B777 flight crew reported a galley fire that resulted in an air return and overweight landing.

Narrative: On climb out we got a call from the aft galley Flight Attendant smoke coming out of the ovens. I asked the IRO to run back and check out if the smoke was burning food trays or something else. When she called back all ovens were pouring out smoke and they were in the process of de-powering the galleys. I gave the aircraft to the First Officer and [requested priority handling]. Aircraft X turning back to ZZZ with an onboard fire. I got the IRO back up and we coordinated an [expedited return.] Dispatch was notified; ATC was helping us in; Flight Attendants were briefed; and passengers briefed. We completed over weight checklist and had Crash Fire Rescue in place for a long landing and possible bailout. I told the Flight Attendants to empty every Halon bottle in the airplane. Smoke dissipated but returned after 15 minutes. I took control of the aircraft and flew an overweight landing to Runway XX; rolled to the end; turned off and were greeted by Crash Fire Rescue. We were given a frequency for the fire crew and they checked us out as nominal. Since the smoke was dissipating we decided to get to the gate and let the fire crew on board.

Data retrieved from NASA's ASRS site 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.