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A bk-117 cad alerted actuator with an audio indication along with minor uncommanded yaw and rudder pedal feedback during takeoff. The pilot landed without incident. This aircraft and other similar aircraft have displayed the same behavior.
| Attributes | |
| ACN | 1277266 |
| Time | |
| Date | 201507 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Make Model Name | MBB-BK 117 All Series |
| Flight Phase | Takeoff |
| Component | |
| Aircraft Component | Yaw Control |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
Crew was notified of scene flight. Pilot proceed[ed] through start up procedures. Upon taking off and over taxiway aircraft cad displayed 'actuator;' audio indication; pilot experienced minor uncommanded control inputs in the yaw axis and feedback in the pedals. Aircraft was still controllable. Pilot returned to landing area; landed without incident and proceeded with normal shutdown. Maintenance and dispatch notified of issue. Aircraft has exhibited condition in the past and is a noted maintenance concern about every 6 months. Has occurred in other aircraft of the same design. Unaware of corrective action that could be conducted. Track and conduct trend analysis; gather information and apply corrections via manufacturers guidance.
Original NASA ASRS Text
Title: A BK-117 CAD alerted ACTUATOR with an audio indication along with minor uncommanded yaw and rudder pedal feedback during takeoff. The pilot landed without incident. This aircraft and other similar aircraft have displayed the same behavior.
Narrative: Crew was notified of scene flight. Pilot proceed[ed] through start up procedures. Upon taking off and over taxiway aircraft CAD displayed 'Actuator;' audio indication; pilot experienced minor uncommanded control inputs in the yaw axis and feedback in the pedals. Aircraft was still controllable. Pilot returned to landing area; landed without incident and proceeded with normal shutdown. Maintenance and dispatch notified of issue. Aircraft has exhibited condition in the past and is a noted maintenance concern about every 6 months. Has occurred in other aircraft of the same design. Unaware of corrective action that could be conducted. Track and conduct trend analysis; gather information and apply corrections via manufacturers guidance.
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.