What should be done if unexpected turbulence is encountered during VNAV descent?

In the context of handling unexpected turbulence during a VNAV descent, closely monitoring the descent and adjusting the rate of descent as necessary is crucial for maintaining safety and comfort. Turbulence can significantly affect the aircraft’s altitude and vertical speed, and pilots must remain vigilant to ensure that the aircraft remains within safe operational limits.

By actively monitoring the descent parameters, a pilot can make timely adjustments to the aircraft's rate of descent to maintain control and reduce the risk of structural stress on the aircraft. This proactive approach allows pilots to respond to changing conditions, ensuring they can navigate safely through turbulence rather than risking issues by either descending too quickly or maintaining a potentially unsafe descent profile.

This choice emphasizes the necessity for vigilance and adaptability, which are key in maintaining flight safety when faced with unexpected situations.