Narrative:

Shortly after takeoff while on initial climb out we received a triple chime and an EICAS 'lav smoke' warning. This occurred at approximately 500 ft. Within a few seconds the flight attendant called the captain and alerted us to the presence of smoke in the cabin. The captain ran the QRH; contacted departure and [requested priority handling]. We were vectored back for the landing with [ground] equipment on standby. Landing was routine and we taxied back to the gate without further incident.the main thing I learned from this event is that remaining calm and continuing to perform as a crew using threat and error management and CRM can prevent things from becoming much worse. I and the captain both remained calm; followed procedure; and continued as normally as possible. I will use this experience when I become a captain to instill in my first officers the importance of remaining calm and following procedure.

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Original NASA ASRS Text

Title: An Air Carrier pilot reported returning to the airport due to smoke in the cabin and a LAV SMOKE alert.

Narrative: Shortly after takeoff while on initial climb out we received a triple chime and an EICAS 'LAV SMOKE' warning. This occurred at approximately 500 ft. Within a few seconds the Flight Attendant called the Captain and alerted us to the presence of smoke in the cabin. The Captain ran the QRH; contacted Departure and [requested priority handling]. We were vectored back for the landing with [ground] equipment on standby. Landing was routine and we taxied back to the gate without further incident.The main thing I learned from this event is that remaining calm and continuing to perform as a crew using threat and error management and CRM can prevent things from becoming much worse. I and the Captain both remained calm; followed procedure; and continued as normally as possible. I will use this experience when I become a Captain to instill in my First Officers the importance of remaining calm and following procedure.

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.