Narrative:

Aircraft suddenly developed severe vibration in-flight. Ran partial power checklist and diverted to centralia airport. Proper cockpit resource procedures played a prominent role in executing a safe landing.

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Original NASA ASRS Text

Title: INSTRUCTOR PLT OF AN SMA SEL TRAINING ACFT DIVERTED TO A NEARBY ARPT WHEN AN UNEXPLAINED ACFT VIBRATION CAUSED AN ACFT ABNORMALITY.

Narrative: ACFT SUDDENLY DEVELOPED SEVERE VIBRATION INFLT. RAN PARTIAL PWR CHKLIST AND DIVERTED TO CENTRALIA ARPT. PROPER COCKPIT RESOURCE PROCS PLAYED A PROMINENT ROLE IN EXECUTING A SAFE LNDG.

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.