FrSky ASS-100 ADV Air Speed Sensor

The FrSky ASS-100 ADV Air Speed Sensor is a telemetry accessory designed to measure the speed of an aircraft relative to the surrounding air. It uses a pitot tube to detect airflow pressure and sends the resulting airspeed information to a compatible FrSky telemetry system.

Unlike GPS ground-speed measurements, airspeed measurement provides information about the aircraft's movement through the surrounding air. This can be useful for fixed-wing pilots monitoring flight performance, managing flight speed, and evaluating aircraft behavior.

The ASS-100 ADV belongs to FrSky's ADVANCE sensor series and supports both FBUS and Smart Port communication. Its measurement range reaches 360 km/h, making it suitable for a wide range of RC aircraft applications.

Features

• Measures aircraft airspeed from 0 to 360 km/h.

• Pitot tube-based differential pressure measurement.

• Supports FrSky FBUS and Smart Port (S.Port) protocols.

• Compatible with supported FrSky telemetry systems.

• Lightweight sensor board weighing approximately 4.9g.

• Includes a 101mm pitot tube.

• Flexible silicone hose for connecting the pitot tube to the sensor.

• Low current consumption of approximately 10mA at 5V.

• Compact design for RC aircraft installation.

• Supports telemetry monitoring during flight.

Applications

• Fixed-wing RC aircraft airspeed monitoring.

• FPV airplane telemetry systems.

• UAV airspeed measurement.

• RC glider flight monitoring.

• Aircraft performance analysis.

• FrSky FBUS telemetry installations.

• FrSky Smart Port telemetry setups.

How to Use

1. Connect the pitot tube to the ASS-100 ADV sensor board using the supplied silicone hose.

2. Check that the hose connections are secure and free from leaks or loose fittings.

3. Mount the pitot tube on the aircraft where it can measure undisturbed airflow.

4. Position the tube so its static holes extend at least 13mm beyond the wing's leading edge or other nearby obstructions.

5. Keep the pitot tube away from propeller airflow, which can cause inaccurate readings.

6. Connect the sensor to a compatible FrSky receiver using the supported FBUS or S.Port connection.

7. Supply power within the specified 4–10V DC operating range.

8. Configure the telemetry system to recognize and display the airspeed sensor data.

9. Check the sensor readings and installation before flight.

Important Notes

• This sensor requires a compatible FrSky FBUS or Smart Port telemetry system.

• Verify receiver protocol compatibility before purchasing.

• Do not exceed the 4–10V DC operating voltage.

• Install the pitot tube in undisturbed airflow for reliable measurements.

• Avoid positioning the tube directly in propeller wash or behind aircraft obstructions.

• Keep the sensor board away from water, fuel, excessive vibration, and other potentially damaging conditions.

• Ensure the silicone hose is properly connected without leaks, kinks, or blockages.

• Airspeed and GPS ground speed are different measurements and may not show the same value.

• The ASS-100 ADV is a telemetry sensor; it does not independently control aircraft speed or prevent stalls.

Package Includes

• 1 × FrSky ASS-100 ADV Air Speed Sensor

• 1 × Pitot Tube

• 1 × Silicone Hose (approximately 1m)

• 2 × Connection Cables