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An air carrier B757 flight crew had a 'leading edge slat disagree' warning illuminate. They accomplished the checklist procedure and made a landing after coordination with the cabin attendants and briefing the passenger.
| Attributes | |
| ACN | 395218 |
| Time | |
| Date | 199802 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : ubr airport : san |
| State Reference | CA |
| Altitude | msl bound lower : 8500 msl bound upper : 9000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : san |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other landing other other |
| Route In Use | approach : straight in enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 210 flight time total : 14500 flight time type : 1600 |
| ASRS Report | 395218 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : less severe other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : declared emergency none taken : detected after the fact other |
| Consequence | faa : reviewed incident with flight crew Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
Aircraft was being vectored and descending for localizer runway 27 approach at about 8500 ft and slowing to vzf (flap speed). Flaps 1 degree were selected and immediately an EICAS message 'leading edge slat disagree' appeared. Captain was flying and directed first officer to conduct communication procedure. Captain requested 9000 ft and vectors from ATC and advised them of problem. Aircraft was leveled at 9000 ft and speed at vzf. After reviewing communication procedure, first officer contacted maintenance and dispatch to advise of situation and see if a direct was advisable. Captain briefed lead cabin attendant on situation and to prepare cabin for normal landing. Maintenance and dispatch concurred san ok for landing. Communication procedure was completed. Emergency was declared with ATC. Approach and landing were uneventful. Aircraft taxied to gate with flaps in landing confign. This is one of many irregular sits practiced in simulator training. This training background made dealing with the real world scenario much less stressful and instilled more confidence in a successful outcome.
Original NASA ASRS Text
Title: AN ACR B757 FLC HAD A 'LEADING EDGE SLAT DISAGREE' WARNING ILLUMINATE. THEY ACCOMPLISHED THE CHKLIST PROC AND MADE A LNDG AFTER COORD WITH THE CABIN ATTENDANTS AND BRIEFING THE PAX.
Narrative: ACFT WAS BEING VECTORED AND DSNDING FOR LOC RWY 27 APCH AT ABOUT 8500 FT AND SLOWING TO VZF (FLAP SPD). FLAPS 1 DEG WERE SELECTED AND IMMEDIATELY AN EICAS MESSAGE 'LEADING EDGE SLAT DISAGREE' APPEARED. CAPT WAS FLYING AND DIRECTED FO TO CONDUCT COM PROC. CAPT REQUESTED 9000 FT AND VECTORS FROM ATC AND ADVISED THEM OF PROB. ACFT WAS LEVELED AT 9000 FT AND SPD AT VZF. AFTER REVIEWING COM PROC, FO CONTACTED MAINT AND DISPATCH TO ADVISE OF SIT AND SEE IF A DIRECT WAS ADVISABLE. CAPT BRIEFED LEAD CABIN ATTENDANT ON SIT AND TO PREPARE CABIN FOR NORMAL LNDG. MAINT AND DISPATCH CONCURRED SAN OK FOR LNDG. COM PROC WAS COMPLETED. EMER WAS DECLARED WITH ATC. APCH AND LNDG WERE UNEVENTFUL. ACFT TAXIED TO GATE WITH FLAPS IN LNDG CONFIGN. THIS IS ONE OF MANY IRREGULAR SITS PRACTICED IN SIMULATOR TRAINING. THIS TRAINING BACKGROUND MADE DEALING WITH THE REAL WORLD SCENARIO MUCH LESS STRESSFUL AND INSTILLED MORE CONFIDENCE IN A SUCCESSFUL OUTCOME.
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.