Narrative:

On vectors for landing the captain asked for flaps one. I moved the flap handle to one and a caution alert sounded with an EICAS message of te flap disagree. Notified approach that we wanted the long runway and we were declaring an emergency. They vectored us to 33L. Performed the procedure and was able to get twenty flaps on alternate. Landed without incident.

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Original NASA ASRS Text

Title: A B757-200 Flight Crew declared and emergency and landed with twenty flaps after receiving a TE FLAP DISAGREE EICAS message.

Narrative: On vectors for landing the Captain asked for flaps one. I moved the flap handle to one and a caution alert sounded with an EICAS message of TE FLAP DISAGREE. Notified approach that we wanted the long runway and we were declaring an emergency. They vectored us to 33L. Performed the procedure and was able to get twenty flaps on alternate. Landed without incident.

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.