Narrative:

While climbing out of 6;000 ft; we noticed an unusual engine vibration that seemed to be coming from the right engine. All engine instrument indications were normal; but as we continued to climb we noticed that the vibration got worse. When we leveled of momentarily; the first officer brought the power back out of the rating detent and the vibration ceased. ATC gave us a clearance to climb to FL210 and as climb power was applied the vibration returned. We contacted company and in the time it took to get a response we had leveled FL210. We noticed that the vibration was also present during cruise with the power above 70% trq. Once company responded we decided to return back to our departure airport. During the descent and all the way through the landing no further vibration was noted.

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Original NASA ASRS Text

Title: A Dash 8 flight crew elected to return to their departure airport when a persistent vibration in the right engine continued to the top of climb.

Narrative: While climbing out of 6;000 FT; we noticed an unusual engine vibration that seemed to be coming from the right engine. All engine instrument indications were normal; but as we continued to climb we noticed that the vibration got worse. When we leveled of momentarily; the First Officer brought the power back out of the rating detent and the vibration ceased. ATC gave us a clearance to climb to FL210 and as climb power was applied the vibration returned. We contacted company and in the time it took to get a response we had leveled FL210. We noticed that the vibration was also present during cruise with the power above 70% TRQ. Once company responded we decided to return back to our departure airport. During the descent and all the way through the landing no further vibration was noted.

Data retrieved from NASA's ASRS site as of April 2012 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.