Narrative:

Weather in the morning was clear blue skies and a temperature in the low 50's. After a long taxi out from the hangar to the runway we were cleared for takeoff on a runway heading to 4;000 feet. Once in the air; the appropriate checklists were completed and we were handed off to center fairly early as we were the only airplane in the area. In the climb crossing approximately 8;000 feet we encountered a vibration which to felt and sounded like the landing gear panel had dropped back down. After a quick scan of the instruments we realized that our left engine had indications of a much higher temperature and erratic N1 and N2 indications. At this point; we were both convinced that a return was our best course of action. After a quick level off and a call to center to let them know we needed to return; the engine started to show signs of further failure.once power was reduced to start the descent; the vibration and the noise level were both increasing. After the handoff to center we were offered one runway for landing; however; we both agreed that we were too high and would have to move too aggressively to make that runway safely. We opted for a different runway to allow a safe descent and a little more time to run the appropriate checklists. On our base leg as the aircraft was being configured for landing and power was further reduced the left engine was now shaking violently and the only option for us was to shut it down. A smooth landing was made and a taxi back to the hangar was without further incident. After the mechanic did his inspection of the engine;it was determined that the number 4 bearing had failed which is a somewhat common occurrence for this particular honeywell engine.

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Original NASA ASRS Text

Title: CL350 pilot reported engine failure after takeoff. Return to departure airport was made with the engine shut down resulting in a smooth landing and no further incident.

Narrative: Weather in the morning was clear blue skies and a temperature in the low 50's. After a long taxi out from the hangar to the runway we were cleared for takeoff on a runway heading to 4;000 feet. Once in the air; the appropriate checklists were completed and we were handed off to Center fairly early as we were the only airplane in the area. In the climb crossing approximately 8;000 feet we encountered a vibration which to felt and sounded like the landing gear panel had dropped back down. After a quick scan of the instruments we realized that our left engine had indications of a much higher temperature and erratic N1 and N2 indications. At this point; we were both convinced that a return was our best course of action. After a quick level off and a call to Center to let them know we needed to return; the engine started to show signs of further failure.Once power was reduced to start the descent; the vibration and the noise level were both increasing. After the handoff to Center we were offered one runway for landing; however; we both agreed that we were too high and would have to move too aggressively to make that runway safely. We opted for a different runway to allow a safe descent and a little more time to run the appropriate checklists. On our base leg as the aircraft was being configured for landing and power was further reduced the left engine was now shaking violently and the only option for us was to shut it down. A smooth landing was made and a taxi back to the hangar was without further incident. After the mechanic did his inspection of the engine;it was determined that the number 4 bearing had failed which is a somewhat common occurrence for this particular Honeywell engine.

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.