An air carrier flight crew experienced a burning electrical odor coming from one of the lavatories. ...

Attributes
ACN	1333177
Time
Date	201602
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Person 1
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 121 Flight Crew Total 9426 Flight Crew Type 6318
Person 2
Function	Pilot Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 130 Flight Crew Total 1085 Flight Crew Type 30
Events
Anomaly	Aircraft Equipment Problem Less Severe Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor

Narrative:

I was asleep in the lower bunk of the pilot rest area woken up by the reading light turning on. Shortly after that I got a call from the captain informing me that the flight attendants smell something burning in the cabin by door 2L. He asked the first officer and myself to find out what we can and report back. I went to door 2L talked with several crew members about what they know and was directed to the lavatory at 2L. There was an electrical burning smell in the lavatory and I took everything apart that I could looking for smoke or fire and found none. I went through the whole cabin searching for burning smell but was only able to detect the odor in the lavatory at 2L and reported to the captain. After several minutes of searching I went to the cockpit to assist the crew there while the first officer stayed in the cabin to assist there. The captain and first officer had finished the smoke fumes odor checklist and briefed me on what they had finished. We discussed the best location to divert and continued south to our diversion destination. The first officer reported that he found an overheated and melted connector on one of the bulbs in lavatory at 2L the bulb was hard to remove because the connector was bent. We were not positive this was the source of the burning smell and continued the diversion with normal approach and landing.

Original NASA ASRS Text

Title: An air carrier flight crew experienced a burning electrical odor coming from one of the lavatories. They advised ATC and diverted.

Narrative: I was asleep in the lower bunk of the pilot rest area woken up by the reading light turning on. Shortly after that I got a call from the Captain informing me that the flight attendants smell something burning in the cabin by door 2L. He asked the First Officer and myself to find out what we can and report back. I went to door 2L talked with several crew members about what they know and was directed to the lavatory at 2L. There was an electrical burning smell in the Lavatory and I took everything apart that I could looking for smoke or fire and found none. I went through the whole cabin searching for burning smell but was only able to detect the odor in the lavatory at 2L and reported to the Captain. After several minutes of searching I went to the cockpit to assist the crew there while the First Officer stayed in the cabin to assist there. The Captain and First Officer had finished the smoke fumes odor checklist and briefed me on what they had finished. We discussed the best location to divert and continued south to our diversion destination. The First Officer reported that he found an overheated and melted connector on one of the bulbs in lavatory at 2L the bulb was hard to remove because the connector was bent. We were not positive this was the source of the burning smell and continued the diversion with normal approach and landing.

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.