Which instrument provides the most stable reference for attitude in steady wind, and why?

• A. The heading indicator, because heading is unaffected by wind.
• B. The attitude indicator, because it is a gyroscopically stabilized reference designed to minimize wind-induced errors in attitude display.
• C. The altimeter, because altitude stabilizes attitude display.
• D. The VSI, because vertical speed is stable in wind.

Answer: (B)

The main idea is that a stable reference for attitude must resist external disturbances like wind. The attitude indicator does exactly that: it uses a gyroscope to maintain a fixed reference to the aircraft’s orientation, showing a steady horizon and the aircraft’s pitch and bank regardless of steady wind. This gyroscopically stabilized display minimizes the effect of wind-caused motions on what you’re reading about attitude.

The heading indicator measures yaw to show direction, but it’s more prone to drift and precession errors and doesn’t provide a direct readout of pitch and bank. The altimeter and VSI are tied to air pressure and vertical motion, not the aircraft’s attitude, so they don’t serve as stable references for attitude in wind.