Park Rapids Avionics Products
S-TEC Electric Turn Coordinator
This part number designates a panel-mounted electric turn coordinator manufactured by S-TEC Corporation. In addition to providing the pilot with standard roll and yaw rate indications, this instrument functions as a critical autopilot subsystem designed to feed roll rate data directly to an onboard S-TEC automated flight control system. The part number breakdown reflects its exact layout: 8 represents a factory-calibrated panel tilt angle, 28 indicates its operating voltage, and L designates an internally lighted configuration
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.
Key Technical Capabilities
- Autopilot Rate Sensor Output: Features an internal sensor array that measures precise gyroscopic roll-rate parameters and continuously outputs stabilization commands to the primary autopilot computer to maintain steady wing leveling or controlled turns.
- Dual-Axis Flight Indication: Combines a miniature symbolic aircraft display to represent roll rate alongside a traditional mechanical fluid-filled inclinometer (slip/skid ball) to assist the pilot in maintaining a perfectly coordinated flight profile.
- Independent Backup Protection: Relies entirely on an electric internal gyro mechanism. This operates separately from pneumatic systems, ensuring the pilot retains dynamic turn rate information during complete vacuum or pressure pump failure scenarios.
- Vibration-Isolated Architecture: Built with internal damping systems engineered to withstand continuous engine vibration profiles, preventing display jitter and maintaining steady stabilization outputs to flight computers.
Additional information
| Part Number | 6405-8-28L |
|---|---|
| Serial Number | 9299E |
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