What is the purpose of instrument scanning during an approach?

• A. To monitor fuel flow
• B. To ensure autopilot status
• C. To confirm heading changes only
• D. It keeps you aware of the aircraft’s attitude, altitude, and potential hazards, ensuring proper alignment with the approach path

Answer: (D)

During an instrument approach, you continuously cross-check the flight instruments to maintain control and follow the approach path. Since external cues are limited, the attitude indicator guides your pitch and bank to keep the wings stable and the aircraft on the correct descent attitude. The altimeter and vertical speed indicator help you stay on the published altitude and descent rate, ensuring you line up with the glide slope. The navigation instruments, such as the course deviation indicator or HSI, keep you centered on the final approach course and properly aligned with the runway. You also stay alert for hazards—terrain, obstacles, other traffic, and weather—so you can detect and correct deviations early. If autopilot is engaged, you still monitor its status, but the primary purpose is to maintain awareness of attitude, altitude, and alignment with the approach while watching for potential hazards.