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Crj-900 captain reported a temporary 'un-commanded yawing motion' during a right turn which dissipated and did not reoccur for the remainder of flight.
| Attributes | |
| ACN | 1759692 |
| Time | |
| Date | 202009 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | Regional Jet 900 (CRJ900) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Rudder |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 14 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
Took place from ZZZ-ZZZ1. In cruise at FL200 doing 300 KIAS with autopilot engaged; we experienced un-commanded yawing motions while in a right bank. We felt the rudder kick hard to the left 4 or 5 times. Both pilots feet were on the floor. When we looked at the flight controls synoptic page it confirmed the rudder was moving and strangely the rudder limiter on the left side was bouncing back and forth even though we were at a constant airspeed. After the wings rolled level the rudder stopped kicking. This was the only time the event occurred on this leg. I am not sure why the event occurred; a malfunction of some sort.
Original NASA ASRS Text
Title: CRJ-900 Captain reported a temporary 'un-commanded yawing motion' during a right turn which dissipated and did not reoccur for the remainder of flight.
Narrative: Took place from ZZZ-ZZZ1. In cruise at FL200 doing 300 KIAS with autopilot engaged; we experienced un-commanded yawing motions while in a right bank. We felt the rudder kick hard to the left 4 or 5 times. Both pilots feet were on the floor. When we looked at the flight controls synoptic page it confirmed the rudder was moving and strangely the rudder limiter on the left side was bouncing back and forth even though we were at a constant airspeed. After the wings rolled level the rudder stopped kicking. This was the only time the event occurred on this leg. I am not sure why the event occurred; a malfunction of some sort.
Data retrieved from NASA's ASRS site 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.