Narrative:

During climb, #1 engine developed a very loud vibration which could also be felt throughout airplane. Executed #1 engine precautionary shutdown checklist. Notified ATC and company. Returned to iah and landed. We were not overweight.

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Original NASA ASRS Text

Title: ENGINE NOISE AND VIBRATION PROMPT ENGINE SHUTDOWN FOR ACR MLG.

Narrative: DURING CLIMB, #1 ENGINE DEVELOPED A VERY LOUD VIBRATION WHICH COULD ALSO BE FELT THROUGHOUT AIRPLANE. EXECUTED #1 ENGINE PRECAUTIONARY SHUTDOWN CHECKLIST. NOTIFIED ATC AND COMPANY. RETURNED TO IAH AND LANDED. WE WERE NOT OVERWEIGHT.

Data retrieved from NASA's ASRS site as of July 2007 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.