Narrative:

Climbing through FL180; received 'engine overspd' warning for right engine. Complied with QRH and warning cleared. Maintenance advised us to divert. Because of the unknown reliability of #2 engine; and to decrease the chance of a go around; an emergency was declared and an overweight landing accomplished (after consulting with maintenance). No further abnormalities noted.

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Original NASA ASRS Text

Title: A CRJ200 FLT CREW RECEIVED AN ENG OVERSPD WARNING. THEY DECLARED AN EMER AND LANDED OVERWT AT THE NEAREST SUITABLE ARPT.

Narrative: CLBING THROUGH FL180; RECEIVED 'ENG OVERSPD' WARNING FOR R ENG. COMPLIED WITH QRH AND WARNING CLRED. MAINT ADVISED US TO DIVERT. BECAUSE OF THE UNKNOWN RELIABILITY OF #2 ENG; AND TO DECREASE THE CHANCE OF A GAR; AN EMER WAS DECLARED AND AN OVERWT LNDG ACCOMPLISHED (AFTER CONSULTING WITH MAINT). NO FURTHER ABNORMALITIES NOTED.

Data retrieved from NASA's ASRS site as of January 2009 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.