Narrative:

On initial climb and shortly after the flaps were retracted; we initiated a turn to assigned heading; in the turn we experienced severe vibration in the aircraft and loud banging. We experienced a rollback of power on the left engine in the turn. We had a red EICAS left engine exceedance message. Unsure of the airworthiness of the aircraft at this point; and the condition not getting any better. I had my first officer notify ATC of [the situation] and we were given an immediate landing clearance.

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Original NASA ASRS Text

Title: Challenger 350 Captain reported engine failure indications that resulted in a return to the departure airport.

Narrative: On initial climb and shortly after the flaps were retracted; we initiated a turn to assigned heading; in the turn we experienced severe vibration in the aircraft and loud banging. We experienced a rollback of power on the left engine in the turn. We had a red EICAS L engine exceedance message. Unsure of the airworthiness of the aircraft at this point; and the condition not getting any better. I had my First Officer notify ATC of [the situation] and we were given an immediate landing clearance.

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.