Narrative:

As a result of an air return for a significant fuel leak; we had to land overweight. The first officer did an excellent job with the descent upon landing; well within the 300 ft per minute standard.upon initial climbout; tower informed us; 'you have quite a plume trailing from your left wing.' I immediately looked and confirmed it out my window. It looked like fuel to me; and a significant amount. I advised the tower we wanted to return and he said to call departure and he would let them know. We contacted departure; and slowed to 200 KTS while on a downwind. We did the after-takeoff checklist; calculated the landing data; called operations and then proceeded with all the arrival checklists starting with the in-range. We turned base for an expended final and conducted the suspected fuel leak and overweight landing QRH. Tower had declared an emergency for us; so we reported the souls on-board. The first officer did an excellent landing well below 300 ft per minute. Arff (airport rescue and fire fighters) followed us to the gate without further incident. Later; the chief pilot informed us after inspection there was a leak letting fuel vent.

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Original NASA ASRS Text

Title: On takeoff the crew of an Embraer 145 was notified by ATC that there was a fluid emanating from the left wing; which was confirmed by the Captain. The crew elected to return for a safe landing. Later it was confirmed that fuel had vented from the left wing tank.

Narrative: As a result of an air return for a significant fuel leak; we had to land overweight. The First Officer did an excellent job with the descent upon landing; well within the 300 FT per minute standard.Upon initial climbout; Tower informed us; 'You have quite a plume trailing from your left wing.' I immediately looked and confirmed it out my window. It looked like fuel to me; and a significant amount. I advised the Tower we wanted to return and he said to call Departure and he would let them know. We contacted Departure; and slowed to 200 KTS while on a downwind. We did the After-Takeoff Checklist; calculated the landing data; called Operations and then proceeded with all the arrival checklists starting with the in-range. We turned base for an expended final and conducted the suspected fuel leak and overweight landing QRH. Tower had declared an emergency for us; so we reported the souls on-board. The First Officer did an excellent landing well below 300 FT per minute. ARFF (Airport Rescue and Fire Fighters) followed us to the gate without further incident. Later; the Chief Pilot informed us after inspection there was a leak letting fuel vent.

Data retrieved from NASA's ASRS site as of July 2013 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.