When is the best time to configure the aircraft for landing in VNAV?

The best time to configure the aircraft for landing in VNAV is during the final approach phase as guided by VNAV information. This phase provides the most relevant and accurate data for the approach and landing sequence. By configuring the aircraft at this time, pilots can utilize VNAV's capability to manage vertical guidance effectively, allowing for a stable descent path that is aligned with the runway’s glide slope.

During the final approach, pilots can ensure that the VNAV system is taking into account the current conditions, including wind, altitude, and the required approach angles. This timing allows pilots to receive timely updates from the VNAV system that is designed to optimize descent profiles and enhance safety during this critical phase of flight. It also allows for appropriate configuration changes, such as adjusting flaps and speeds, to be made in concert with the aircraft's descent profile, ensuring a smoother landing process.

Other phases, such as during the climb, immediately after takeoff, or at cruising altitude before descent begins, do not provide the same level of necessary situational awareness and detailed guidance that is available during the final approach phase. Configurations made too early may lead to unnecessary adjustments, missed cues, or inefficiencies as flight conditions change throughout the flight. Thus, focusing efforts on configuring