Narrative:

Performed ILS. Broke out of clouds around 400 ft AGL and proceeded visually. Made a normal landing on centerline. Runway was 200 ft wide with a plowed/piled snow section on either side. ATC reported breaking action good and no reports as to plowed area. Initiated thrust reversers on landing rollout and entered a yawing/swerve to the left. I was pilot flying. Captain assumed control positively and regained control to centerline and stopped. We experienced asymmetrical thrust that caused swerve. We did not exit runway during swerve/yawing motion. Determined it was safe to taxi to gate. Observed engine 1 thrust reverse fail; engine 1 thrust reverse disagree on crew alerting system. Mechanical malfunction was exacerbated by inaccurate runway conditions.

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Original NASA ASRS Text

Title: An EMB145 landed on an ice/snow contaminated runway with good braking action reported and yawed severely but did not depart the runway after the left thrust reverser failed and the engine had an uncommanded shutdown. The Captain regained control of the aircraft and reported poor braking.

Narrative: Performed ILS. Broke out of clouds around 400 FT AGL and proceeded visually. Made a normal landing on centerline. Runway was 200 FT wide with a plowed/piled snow section on either side. ATC reported breaking action good and no reports as to plowed area. Initiated thrust reversers on landing rollout and entered a yawing/swerve to the left. I was pilot flying. Captain assumed control positively and regained control to centerline and stopped. We experienced asymmetrical thrust that caused swerve. We did not exit runway during swerve/yawing motion. Determined it was safe to taxi to gate. Observed Engine 1 thrust reverse fail; Engine 1 thrust reverse disagree on crew alerting system. Mechanical malfunction was exacerbated by inaccurate runway conditions.

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.