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EMB190 captain experiences frozen aileron controls during localizer intercept. Considerable force is required to overcome the resistance and a successful ILS approach in VMC ensues. Maintenance discovers that leaking water has frozen the aileron controls.
| Attributes | |
| ACN | 932180 |
| Time | |
| Date | 201102 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 190/195 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Aileron Control System |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Track / Heading All Types |
Narrative:
The flight was routine and uneventful until we were about to turn to intercept the ILS. Just prior to localizer intercept; we got a autopilot fail message on the EICAS. I cancelled the caution and tried to manually control the airplane. I noticed the ailerons could not be moved. After applying considerable input pressure; I regained roll control. During this event we did overshoot our final by a considerable amount. We immediately corrected our course. The first officer scrolled through various mfd synoptic pages and noted no anomalies. Throughout the approach; the roll control felt very heavy and sluggish. With the good VMC weather conditions; we elected to continue the approach. The landing was uneventful. By the time we arrived at the gate; we realized that we could no longer move the control yoke. We contacted maintenance control. A short while later; the mechanic on duty reported the cause to be a water leak that had frozen part of the flight control system.
Original NASA ASRS Text
Title: EMB190 Captain experiences frozen aileron controls during LOC intercept. Considerable force is required to overcome the resistance and a successful ILS approach in VMC ensues. Maintenance discovers that leaking water has frozen the aileron controls.
Narrative: The flight was routine and uneventful until we were about to turn to intercept the ILS. Just prior to LOC intercept; we got a Autopilot FAIL message on the EICAS. I cancelled the caution and tried to manually control the airplane. I noticed the ailerons could not be moved. After applying considerable input pressure; I regained roll control. During this event we did overshoot our final by a considerable amount. We immediately corrected our course. The First officer scrolled through various MFD synoptic pages and noted no anomalies. Throughout the approach; the roll control felt very heavy and sluggish. With the good VMC weather conditions; we elected to continue the approach. The landing was uneventful. By the time we arrived at the gate; we realized that we could no longer move the control yoke. We contacted Maintenance Control. A short while later; the mechanic on duty reported the cause to be a water leak that had frozen part of the flight control system.
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.