EMB ERJ 145 ER/LR
Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument
Troubleshooting
Aircraft Equipment Problem Critical; Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor
Air Traffic Control Issued New Clearance; Air Traffic Control Provided Assistance; Flight Crew Landed in Emergency Condition; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Returned To Departure Airport
Aircraft
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.
An Air Carrier pilot reported returning to the airport due to smoke in the cabin and a LAV SMOKE alert.