What is the function of the Vertical Speed Indicator during the taxi check?

What is the function of the Vertical Speed Indicator during the taxi check?

• A. To indicate climbing rate at all times
• B. To show a reading of zero feet per minute
• C. To provide wind speed readings
• D. To measure the altitude only

Answer: (B)

The Vertical Speed Indicator (VSI) is designed to indicate the rate of climb or descent in feet per minute during flight. However, during the taxi phase of operations, the VSI should reflect a neutral position since the aircraft is not climbing or descending. Therefore, a reading of zero feet per minute is expected when the aircraft is on the ground and taxiing. This behavior of the VSI during the taxi check confirms that the instrument is functioning correctly and is ready to provide accurate readings once the aircraft is airborne. It’s important for pilots to establish that their instruments are operational before taking off to ensure safety and reliable performance during flight. The other options do not accurately describe the VSI's function during taxiing or its purpose in general.

The Vertical Speed Indicator (VSI) is designed to indicate the rate of climb or descent in feet per minute during flight. However, during the taxi phase of operations, the VSI should reflect a neutral position since the aircraft is not climbing or descending. Therefore, a reading of zero feet per minute is expected when the aircraft is on the ground and taxiing.

This behavior of the VSI during the taxi check confirms that the instrument is functioning correctly and is ready to provide accurate readings once the aircraft is airborne. It’s important for pilots to establish that their instruments are operational before taking off to ensure safety and reliable performance during flight. The other options do not accurately describe the VSI's function during taxiing or its purpose in general.