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An MD11 returned to land after the aircraft banked sharply left following flap/slat retraction and required a good deal of trim and aileron input. The crew noticed a non-fared aileron during preflight which was addressed and signed off by maintenance.
| Attributes | |
| ACN | 903487 |
| Time | |
| Date | 201008 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZZ.Airport |
| State Reference | FO |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | MD-11 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Aileron |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural MEL |
Narrative:
Initial ground/maintenance delay as during preflight noticed one aileron was not faired. Write off was signed off and we were told we were good to go. After takeoff; during flap/slat retraction; airplane banked abruptly to the left. Took both hands on yoke and approximately 20 degrees right deflection to fly straight. Four units of aileron trim required. Autopilot would not remain engaged. Contacted dispatch and maintenance control. Returned to the departure airport. I highly suggest that crews write up malfunctions/abnormalities instead of leaving a broken airplane for the next crew. In this case; the prior crew had called and informed maintenance of a problem; but put nothing in the log book. We noticed the aileron problem on preflight. Maintenance thought they had fixed the problem; but evidently whatever they did made the problem worse. Very frustrating. Airplane never should have left the us
Original NASA ASRS Text
Title: An MD11 returned to land after the aircraft banked sharply left following flap/slat retraction and required a good deal of trim and aileron input. The crew noticed a non-fared aileron during preflight which was addressed and signed off by maintenance.
Narrative: Initial ground/maintenance delay as during preflight noticed one aileron was not faired. Write off was signed off and we were told we were good to go. After takeoff; during flap/slat retraction; airplane banked abruptly to the left. Took both hands on yoke and approximately 20 degrees right deflection to fly straight. Four units of aileron trim required. Autopilot would not remain engaged. Contacted Dispatch and Maintenance Control. Returned to the departure airport. I highly suggest that crews write up malfunctions/abnormalities instead of leaving a broken airplane for the next crew. In this case; the prior crew had called and informed Maintenance of a problem; but put nothing in the log book. We noticed the aileron problem on preflight. Maintenance thought they had fixed the problem; but evidently whatever they did made the problem worse. Very frustrating. Airplane never should have left the U.S.
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.