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B757-200 crew returned to their departure airport with an EICAS warning 'leading edge slat disagree' message.
| Attributes | |
| ACN | 605544 |
| Time | |
| Date | 200401 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : bwi.airport |
| State Reference | MD |
| Altitude | msl single value : 3000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : a90.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 250 flight time total : 10000 flight time type : 1900 |
| ASRS Report | 605544 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : eicas other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : landed as precaution flight crew : diverted to another airport other |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
After takeoff, got an EICAS 'leading edge slat disagree' when attempting to bring flaps from position 1 degree to up. Flap indicator showed halfway between up and flaps 1 degree and had leading edge caution. Kept aircraft below 240 KTS and maximum altitude of 20000 ft. Ran leading edge slat disagree irregular procedure -- did not help. Contacted dispatch and maintenance controller and decided to return to bwi and land overweight. Completed leading edge slat asymmetry procedure and landed 1 hour 2 mins after takeoff. Flaps 20 degrees, vref 172 KTS, landing weight 225000 pounds. Landing uneventful.
Original NASA ASRS Text
Title: B757-200 CREW RETURNED TO THEIR DEP ARPT WITH AN EICAS WARNING 'LEADING EDGE SLAT DISAGREE' MESSAGE.
Narrative: AFTER TKOF, GOT AN EICAS 'LEADING EDGE SLAT DISAGREE' WHEN ATTEMPTING TO BRING FLAPS FROM POS 1 DEG TO UP. FLAP INDICATOR SHOWED HALFWAY BTWN UP AND FLAPS 1 DEG AND HAD LEADING EDGE CAUTION. KEPT ACFT BELOW 240 KTS AND MAX ALT OF 20000 FT. RAN LEADING EDGE SLAT DISAGREE IRREGULAR PROC -- DID NOT HELP. CONTACTED DISPATCH AND MAINT CTLR AND DECIDED TO RETURN TO BWI AND LAND OVERWT. COMPLETED LEADING EDGE SLAT ASYMMETRY PROC AND LANDED 1 HR 2 MINS AFTER TKOF. FLAPS 20 DEGS, VREF 172 KTS, LNDG WT 225000 LBS. LNDG UNEVENTFUL.
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.