Australia CASA Instrument Proficiency Exam 2025 – Complete Practice Test

RNP-LNAV/VNAV stands for Required Navigation Performance with lateral navigation and vertical navigation capabilities. This classification signifies that the aircraft is utilizing sophisticated navigation systems to conduct an approach.

3D procedures, which include RNP-LNAV/VNAV, are characterized by their ability to provide both lateral and vertical guidance, allowing for precise navigation along both dimensions during an approach. This is crucial for improved safety and efficiency, especially in challenging weather conditions or complex airspace.

In contrast, 2D procedures only provide lateral guidance without vertical reference, limiting their precision in vertical navigation. Azimuth procedures refer specifically to approaches that focus on horizontal flight paths and do not typically include the vertical component. Non-precision procedures lack the level of accuracy required for vertical navigation and typically only provide lateral guidance, making them less comprehensive than 3D procedures.

Therefore, RNP-LNAV/VNAV defines a more advanced and precise type of approach that falls under the category of 3D procedures, integrating both lateral and vertical navigation capabilities.