Narrative:

After takeoff we received a le slat asym EICAS message. We leveled off and declared an emergency. We followed QRH procedures and were unable to resolve the slat position. We dumped fuel to a level for a safe but overweight landing.

Google
 

Original NASA ASRS Text

Title: B767-300 Captain experiences a LE SLAT ASYM EICAS message during initial climb. An emergency is declared and flight returns for an overweight landing after complying with QRH procedures.

Narrative: After takeoff we received a LE SLAT ASYM EICAS message. We leveled off and declared an emergency. We followed QRH procedures and were unable to resolve the slat position. We dumped fuel to a level for a safe but overweight landing.

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.