Narrative:

At about 17000 ft the right engine thrust came back to flight idle; followed shortly after by an EICAS caution 'ENG2 reverser fail.' while handling the situation; the thrust on the right engine came back. Performed precautionary engine shutdown; as is called for in the checklist. Declared emergency; notified ATC; company; flight attendant; performed proper checklists; returned for landing.

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Original NASA ASRS Text

Title: AN EMB140 ENG REVERSER FAILED INFLT CAUSING THE ENG TO AUTOMATICALLY REDUCE THRUST. THE ENG WAS SHUT DOWN WITH A RETURN TO LAND.

Narrative: AT ABOUT 17000 FT THE R ENG THRUST CAME BACK TO FLT IDLE; FOLLOWED SHORTLY AFTER BY AN EICAS CAUTION 'ENG2 REVERSER FAIL.' WHILE HANDLING THE SIT; THE THRUST ON THE R ENG CAME BACK. PERFORMED PRECAUTIONARY ENG SHUTDOWN; AS IS CALLED FOR IN THE CHKLIST. DECLARED EMER; NOTIFIED ATC; COMPANY; FLT ATTENDANT; PERFORMED PROPER CHKLISTS; RETURNED FOR LNDG.

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.