Narrative:

I was the working relief pilot. Shortly after gear was retracted; I saw and smelled an acrid smoke. Seconds later; EICAS message; 'smoke detected crew rest F/D.' donned O2. Called flight attendant at 1L with no answer. Later found out they couldn't hear the chime over smoke alarm. Smoke seemed to dissipate a bit. Captain directed me to go to bunk area to confirm issue. Smoke was in bunk room; smoke alarm at 1L; and smoke detected alert on cabin alert panel. No fire witnessed just smoke seen and smelled. Returned to cockpit donned mask as precaution once again. I coordinated the satcom call with dispatch. Dispatcher was very difficult to understand. Very thick accent. Relayed message that returning to [departure airport]... Asked for phone patch to [maintenance control]. Relayed info to him and told him of the choice to land overweight. By this time we are being vectored onto final. Landing uneventful; mindful of brake temps after landing.

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Original NASA ASRS Text

Title: B777 flight crew reported seeing and smelling acrid smoke accompanied by an EICAS message regarding smoke detected in crew rest area after takeoff.

Narrative: I was the working relief pilot. Shortly after gear was retracted; I saw and smelled an acrid smoke. Seconds later; EICAS message; 'Smoke detected crew rest F/D.' Donned O2. Called Flight Attendant at 1L with no answer. Later found out they couldn't hear the chime over smoke alarm. Smoke seemed to dissipate a bit. Captain directed me to go to bunk area to confirm issue. Smoke was in bunk room; smoke alarm at 1L; and smoke detected alert on cabin alert panel. No fire witnessed just smoke seen and smelled. Returned to cockpit donned mask as precaution once again. I coordinated the satcom call with dispatch. Dispatcher was very difficult to understand. Very thick accent. Relayed message that returning to [departure airport]... Asked for phone patch to [maintenance control]. Relayed info to him and told him of the choice to land overweight. By this time we are being vectored onto final. Landing uneventful; mindful of brake temps after 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.