Narrative:

On approach when moving the flaps from 20 to 25 we got a trailing edge flaps disagree light and EICAS message. We broke off the approach; captain ran the QRH items and did PA's while I flew the aircraft and talked to tower and approach. We declared an emergency and requested the longest runway. Landing and rollout were uneventful. Airport rescue and fire fighting followed us to the gate and told us they saw nothing unusual.

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Original NASA ASRS Text

Title: B757 Flight Crew experienced a trailing edge flap asymmetry during approach and goes around. QRH procedures were complied with; an emergency declared; and an uneventful flaps 20 landing ensued.

Narrative: On approach when moving the flaps from 20 to 25 we got a Trailing Edge Flaps Disagree light and EICAS message. We broke off the approach; Captain ran the QRH items and did PA's while I flew the aircraft and talked to Tower and Approach. We declared an emergency and requested the longest runway. Landing and rollout were uneventful. Airport Rescue and Fire Fighting followed us to the gate and told us they saw nothing unusual.

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.