Which instrument would you rely on to monitor your vertical path during climbs and descents?

• A. Vertical Speed Indicator (VSI)
• B. Attitude Indicator
• C. Altimeter
• D. Airspeed Indicator

Answer: (A)

Monitoring how fast you are moving up or down along the vertical axis is what the vertical speed indicator does. It shows your rate of climb or descent in feet per minute, giving you a direct readout of vertical motion so you can hold a specific climb or descent rate and follow a desired vertical profile. The attitude indicator just shows orientation (pitch and bank), not how quickly altitude is changing. The altimeter tells your current altitude, but not the speed of change. The airspeed indicator shows how fast you’re moving horizontally, not vertical movement. Remember, the VSI is most useful when you’re actively managing climbs and descents, often in coordination with the altimeter to ensure you reach the target altitude.