S-TEC Autopilot Yaw Servo

This part number designates a remote-mounted, high-torque electric autopilot yaw servo assembly manufactured by S-TEC Corporation. It functions as the primary mechanical actuator for automated rudder control, interfacing directly with higher-tier S-TEC automated flight control and stabilization systems—such as the S-TEC System 65 configuration.
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Description

This unit has been bench tested by an FAA certified repair station and it comes with an 8130 single release dated 06/03/2026.

The -Y3 variant is built to execute yaw stabilization commands, helping to keep the aircraft in coordinated flight and mitigating adverse aerodynamic behaviors.

Key Technical Capabilities
  • Automated Yaw Tracking: Continuously receives stabilization signals from the primary autopilot computer to adjust rudder inputs, actively dampening uncoordinated tail wagging or fish-tailing tendencies.
  • Adverse Yaw Correction: Works in concert with the autopilot’s roll-axis commands to smoothly counteract adverse yaw forces generated during steep banking maneuvers or active turn tracking.
  • Electromechanical Cable Drive: Utilizes an internal electric motor paired with heavy-duty internal gear reduction linkages to drive an external pulley, maintaining steady physical authority over the aircraft’s rudder rigging. 
  • Robust Environmental Housing: Features a rugged, sealed metallic cylinder casing engineered to defend internal windings, brushes, and feedback circuits from structural vibration and dust accumulation in remote fuselage compartments.

Additional information

Part Number

0106-Y3

Serial Number

7869A

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