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A B737-800 experienced a flap asymmetry during flap extension. An emergency was declared followed by landing with slats extended.
| Attributes | |
| ACN | 751583 |
| Time | |
| Date | 200708 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 7000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : zzz.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 751583 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| ASRS Report | 751584 |
| Events | |
| Anomaly | aircraft equipment problem : less severe |
| Independent Detector | aircraft equipment other aircraft equipment : flight gage |
| Resolutory Action | flight crew : declared emergency flight crew : landed in emergency condition |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
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.
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.