Narrative:

Dulles tower [was] reporting windshear alert. We had a 20 KT gain at 500 ft and began going high on glideslope. Executed missed approach when got a te flap disagree EICAS. Flap handle at 20 and flaps locked out at 23. Ran the checklist and performed uneventful 20 flap approach to landing.

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Original NASA ASRS Text

Title: Air Carrier First Officer reports a go around due to an unstabilized approach caused by windshear. A TE flap disagree EICAS message is displayed during the go around with the flaps locked at 23 degrees. After compliance with QRH procedures an uneventful partial flap landing ensues.

Narrative: Dulles Tower [was] reporting windshear alert. We had a 20 KT gain at 500 FT and began going high on glideslope. Executed missed approach when got a TE Flap Disagree EICAS. Flap handle at 20 and flaps locked out at 23. Ran the checklist and performed uneventful 20 flap approach to landing.

Data retrieved from NASA's ASRS site as of July 2013 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.