The AC REF BUS provides what?

The AC REF BUS provides what?

• A. Engine torque data
• B. Navigation data
• C. Stabilator control signals
• D. Stabilator indicator references

Answer: (D)

The AC REF BUS supplies the reference signals used by cockpit indicators tied to the stabilator. In the UH-60S, the stabilator position indicator relies on a reference input from this bus to display the stabilator’s position to the pilot. The actual control of the stabilator comes from other flight-control systems, and data like engine torque or navigation come from separate systems as well. So the AC REF BUS’s role here is to provide stabilator indicator references, not to power control signals or other data feeds.

The AC REF BUS supplies the reference signals used by cockpit indicators tied to the stabilator. In the UH-60S, the stabilator position indicator relies on a reference input from this bus to display the stabilator’s position to the pilot. The actual control of the stabilator comes from other flight-control systems, and data like engine torque or navigation come from separate systems as well. So the AC REF BUS’s role here is to provide stabilator indicator references, not to power control signals or other data feeds.