Narrative:

On climb out left engine surged badly and thumped. Captain took control of aircraft; declared an emergency with departure and returned to land. Visual approach uneventful with left engine at idle.

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Original NASA ASRS Text

Title: B757 flight crew experiences left engine surging shortly after takeoff. An emergency is declared and the flight returns to the departure airport with the left engine at idle.

Narrative: On climb out left engine surged badly and thumped. Captain took control of aircraft; declared an emergency with Departure and returned to land. Visual approach uneventful with left engine at idle.

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.