Narrative:

Prior to flap extension; we noticed a split in the flap indicator needles; but the aircraft was flying straight. When selected; the flaps did not extend. We performed the trailing edge flap asymmetry procedure; then the trailing edge flaps up procedure in the QRH. After declaring an emergency; we landed without incident. After landing; we stopped and had the fire trucks inspect the landing gear before taxiing to the gate.

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Original NASA ASRS Text

Title: A B737-800 EXPERIENCED A FLAP ASYMMETRY DURING FLAP EXTENSION. AN EMER WAS DECLARED FOLLOWED BY LNDG WITH SLATS EXTENDED.

Narrative: PRIOR TO FLAP EXTENSION; WE NOTICED A SPLIT IN THE FLAP INDICATOR NEEDLES; BUT THE ACFT WAS FLYING STRAIGHT. WHEN SELECTED; THE FLAPS DID NOT EXTEND. WE PERFORMED THE TRAILING EDGE FLAP ASYMMETRY PROC; THEN THE TRAILING EDGE FLAPS UP PROC IN THE QRH. AFTER DECLARING AN EMER; WE LANDED WITHOUT INCIDENT. AFTER LNDG; WE STOPPED AND HAD THE FIRE TRUCKS INSPECT THE LNDG GEAR BEFORE TAXIING TO THE GATE.

Data retrieved from NASA's ASRS site as of January 2009 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.