Narrative:

Upon leveling off at 5;500 feet MSL I began leaning the mixtures to cruise. After about 20 seconds we began to feel a yawing force with no change in our controls or power settings. I pulled power on the left engine back slightly and heard a bang. Saw a hole in the top left engine cowling that began to seep oil. My power came back further and I noticed the RPM dropped from 2;500 to 2;000 without changing the throttle lever. The engine failed and made 3 more holes in the top of the cowling and we began the shut down sequence. We made our turn back to the airport; and landed the aircraft without any further problems.

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Original NASA ASRS Text

Title: BE-55 Captain reported returning to departure airport after experiencing an engine failure at top of climb.

Narrative: Upon leveling off at 5;500 feet MSL I began leaning the mixtures to cruise. After about 20 seconds we began to feel a yawing force with no change in our controls or power settings. I pulled power on the left engine back slightly and heard a bang. Saw a hole in the top left engine cowling that began to seep oil. My power came back further and I noticed the RPM dropped from 2;500 to 2;000 without changing the throttle lever. The engine failed and made 3 more holes in the top of the cowling and we began the shut down sequence. We made our turn back to the airport; and landed the aircraft without any further problems.

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.