How can pilots ensure compliance with VNAV recommendations?

To ensure compliance with VNAV recommendations, pilots should regularly cross-check altitude and speed against VNAV commands. VNAV, or Vertical Navigation, is designed to provide guidance on altitude and speed profiles throughout the flight. By continuously monitoring the aircraft's performance and comparing it to the VNAV data, pilots can make necessary adjustments to maintain the optimal flight path as defined by the system. This practice enhances situational awareness and helps in achieving safe and efficient flight operations.

Other options do not support effective VNAV compliance. Ignoring altitude adjustments undermines the purpose of VNAV, which is to safely manage vertical movement during various phases of flight. Relying solely on visual flight rules does not accommodate the structured altitude changes required in instrument flight, especially in controlled airspace. Finally, while consulting the flight manual can provide valuable information, it does not offer the real-time monitoring and adjustments necessary for VNAV adherence.