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An air carrier flight crew declares an emergency when the leading edge slat light is illuminated. Checklist performed.
| Attributes | |
| ACN | 438367 |
| Time | |
| Date | 199905 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : cle.airport |
| State Reference | OH |
| Altitude | msl single value : 7000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : cle.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer & glide slope : ns |
| Flight Phase | descent : approach descent : intermediate altitude |
| Route In Use | approach : instrument precision |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 50 flight time total : 9000 flight time type : 3500 |
| ASRS Report | 438367 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : le flap transit light other flight crewa |
| Resolutory Action | aircraft : equipment problem dissipated flight crew : landed in emergency condition flight crew : declared emergency |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Aircraft |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Leading edge flap transit light remained on with flaps at 1 degree. Performed abnormal checklist. With additional flap extension flap indication indicated normal. Performed normal flaps 30 degrees landing, as per abnormal checklist. Suspect flap handle was not fully down in the detent for flaps 1 degree gate. Human factor wise: textbook performance -- we took our time and everything worked out great.
Original NASA ASRS Text
Title: AN ACR FLC DECLARES AN EMER WHEN THE LEADING EDGE SLAT LIGHT IS ILLUMINATED. CHKLIST PERFORMED.
Narrative: LEADING EDGE FLAP TRANSIT LIGHT REMAINED ON WITH FLAPS AT 1 DEG. PERFORMED ABNORMAL CHKLIST. WITH ADDITIONAL FLAP EXTENSION FLAP INDICATION INDICATED NORMAL. PERFORMED NORMAL FLAPS 30 DEGS LNDG, AS PER ABNORMAL CHKLIST. SUSPECT FLAP HANDLE WAS NOT FULLY DOWN IN THE DETENT FOR FLAPS 1 DEG GATE. HUMAN FACTOR WISE: TEXTBOOK PERFORMANCE -- WE TOOK OUR TIME AND EVERYTHING WORKED OUT GREAT.
Data retrieved from NASA's ASRS site as of July 2007 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.