Narrative:

After takeoff; we noted a vibration and rumble. We were unable to determine its origin and elected to return to our departure airport for landing. The vibration and noise continued after landing and got worse during the taxi in to the ramp. Post-flight inspection by maintenance control determined that the starter generator had failed. Small chunks of metal were removed from the faulty component.

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Original NASA ASRS Text

Title: A BAE-125-850XP flight crew returned to their departure airport when a noticeable and increasing vibration and rumbling noise occurred shortly after takeoff.

Narrative: After takeoff; we noted a vibration and rumble. We were unable to determine its origin and elected to return to our departure airport for landing. The vibration and noise continued after landing and got worse during the taxi in to the ramp. Post-flight inspection by Maintenance Control determined that the starter generator had failed. Small chunks of metal were removed from the faulty component.

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.