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A B737-700 experienced trailing edge flap problems on approach. They accomplished the appropriate checklist; declared an emergency; and landed normally.
| Attributes | |
| ACN | 711690 |
| Time | |
| Date | 200610 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : zzz.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 218 |
| ASRS Report | 711690 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem flight crew : declared emergency flight crew : executed go around |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
During a visual approach to runway; the aircraft trailing edge flaps fail to extend to a planned 30 degree flap setting. The flap lever was at position 15 degrees with landing gear down and noticed the flap indicator only showing flaps at position 1 degree and leading edge flaps devices fully down. Aborted the visual approach and informed tower control of the flap problem. Climb to a block altitude of 2000-3000 ft MSL and accomplished the flap; trailing: symmetrical non-normal/no flap checklist. The flaps would not extend normally and declared an emergency to return for a flap 15 degrees approach. Had to use the alternate flaps switch to extend the flaps. Flew a normal flaps 15 degree approach and terminated the emergency with the fire chief after checking for hot brakes.
Original NASA ASRS Text
Title: A B737-700 EXPERIENCED TRAILING EDGE FLAP PROBS ON APCH. THEY ACCOMPLISHED THE APPROPRIATE CHKLIST; DECLARED AN EMER; AND LANDED NORMALLY.
Narrative: DURING A VISUAL APCH TO RWY; THE ACFT TRAILING EDGE FLAPS FAIL TO EXTEND TO A PLANNED 30 DEG FLAP SETTING. THE FLAP LEVER WAS AT POS 15 DEGS WITH LNDG GEAR DOWN AND NOTICED THE FLAP INDICATOR ONLY SHOWING FLAPS AT POS 1 DEG AND LEADING EDGE FLAPS DEVICES FULLY DOWN. ABORTED THE VISUAL APCH AND INFORMED TWR CTL OF THE FLAP PROB. CLB TO A BLOCK ALT OF 2000-3000 FT MSL AND ACCOMPLISHED THE FLAP; TRAILING: SYMMETRICAL NON-NORMAL/NO FLAP CHKLIST. THE FLAPS WOULD NOT EXTEND NORMALLY AND DECLARED AN EMER TO RETURN FOR A FLAP 15 DEGS APCH. HAD TO USE THE ALTERNATE FLAPS SWITCH TO EXTEND THE FLAPS. FLEW A NORMAL FLAPS 15 DEG APCH AND TERMINATED THE EMER WITH THE FIRE CHIEF AFTER CHKING FOR HOT BRAKES.
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.