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MD11 flight crew experiences a level 2 slat disag warning; along with stick shaker when the flaps are extended beyond 28 degrees during approach in moderate turbulence. A go around is initiated and the second approach is completed successfully with smooth air below 400 ft AGL.
| Attributes | |
| ACN | 972736 |
| Time | |
| Date | 201110 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | MD-11 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Component | |
| Aircraft Component | Flap/Slat Indication |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 50 Flight Crew Total 12000 Flight Crew Type 3000 |
| Person 2 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 40 Flight Crew Total 20000 Flight Crew Type 1200 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Inflight Event / Encounter Weather / Turbulence |
Narrative:
During approach; in reported moderate turbulence; when flaps were extended beyond 28 degrees; level 2 slat disag warning displayed; along with stick shaker; intermittently; and repeatedly. Go around initiated; and QRH referenced. On second approach we encountered same conditions with no anomalies in pitch nor roll noted with auto flight system off. Turbulence diminished below approximately 400 ft and no other warnings noted during landing.
Original NASA ASRS Text
Title: MD11 flight crew experiences a Level 2 SLAT DISAG warning; along with stick shaker when the flaps are extended beyond 28 degrees during approach in moderate turbulence. A go around is initiated and the second approach is completed successfully with smooth air below 400 FT AGL.
Narrative: During approach; in reported moderate turbulence; when flaps were extended beyond 28 degrees; Level 2 SLAT DISAG warning displayed; along with stick shaker; intermittently; and repeatedly. Go around initiated; and QRH referenced. On second approach we encountered same conditions with no anomalies in pitch nor roll noted with Auto Flight System off. Turbulence diminished below approximately 400 FT and no other warnings noted during landing.
Data retrieved from NASA's ASRS site as of April 2012 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.