Park Rapids Avionics Products
S-TEC Altitude Transducer Assembly
This part number designates a remote-mounted, solid-state barometric sensor manufactured by S-TEC Corporation. It functions as a critical subsystem component designed to provide real-time pressure altitude data directly to the autopilot’s pitch flight guidance computer. It is universally deployed across the majority of S-TEC autopilot installations, including the S-TEC System 30, 50, 55, 55X, and 60-2 configurations.
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
- Altitude Hold Stabilization: Continuously measures absolute static pressure deviations to detect micro-changes in aircraft altitude. It converts these pneumatic pressure variations into electronic feedback loops to allow the autopilot pitch computer to execute steady altitude hold functions.
- Pitot-Static System Integration: Designed to inline “T-fitting” splice directly into the aircraft’s primary static pressure tubing array, plumbing it parallel to the primary altimeter and altitude reporting encoder.
- Dynamic Pitch Correction: Translates instantaneous barometric altitude changes into vertical command errors, prompting the automated flight guidance loop to trim the elevator pitch servo appropriately during turbulence or environmental updrafts/downdrafts.
- Solid-State Reliability: Engineered without mechanical moving diaphragms or standard internal glass components, minimizing electrical drift and protecting the sensor calibration against severe engine vibrations and airframe shock loads.
Additional information
| Part Number | 0111 |
|---|---|
| Serial Number | 21981A |
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