Which instrument provides pitch and roll information primarily?

Which instrument provides pitch and roll information primarily?

• A. Attitude Indicator
• B. HSI
• C. RMI
• D. EFIS

Answer: (A)

Pitch and roll describe the aircraft’s attitude relative to the horizon, and the instrument that shows this attitude most directly is the Attitude Indicator. It uses a gyro to present a miniature aircraft against a horizon picture, so tilting the aircraft left or right (roll) banks the miniature airplane, and climbing or descending changes the horizon’s position relative to the airplane (pitch). This provides immediate, intuitive attitude information even when visual cues outside are unavailable. The HSI focuses on heading and course deviation, not attitude. The RMI shows bearings to radio navaids. EFIS is an overall electronic display system that can show attitude, but its primary purpose isn’t to depict pitch and roll as a dedicated instrument.

Pitch and roll describe the aircraft’s attitude relative to the horizon, and the instrument that shows this attitude most directly is the Attitude Indicator. It uses a gyro to present a miniature aircraft against a horizon picture, so tilting the aircraft left or right (roll) banks the miniature airplane, and climbing or descending changes the horizon’s position relative to the airplane (pitch). This provides immediate, intuitive attitude information even when visual cues outside are unavailable. The HSI focuses on heading and course deviation, not attitude. The RMI shows bearings to radio navaids. EFIS is an overall electronic display system that can show attitude, but its primary purpose isn’t to depict pitch and roll as a dedicated instrument.