Narrative:

During descent at approximately 230 KTS selected flaps one. Trailing edge flaps split and locked out. Went to a holding pattern; informed the flight attendants; notified dispatch via ACARS; declared emergency; and completed all checklists. Proceeded to the airport for an uneventful smooth landing. After clearing runway; requested airport rescue and fire to inspect brakes and tires. We were requested to shutdown engines and were towed to gate.

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Original NASA ASRS Text

Title: A B737-800's trailing edge flaps extended asymmetrically causing a flap lock out. An emergency was declared; the checklist completed and an emergency landing completed.

Narrative: During descent at approximately 230 KTS selected Flaps One. Trailing edge flaps split and locked out. Went to a holding pattern; informed the Flight Attendants; notified Dispatch via ACARS; declared emergency; and completed all checklists. Proceeded to the airport for an uneventful smooth landing. After clearing runway; requested Airport Rescue and Fire to inspect brakes and tires. We were requested to shutdown engines and were towed to gate.

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.