Final answer:
LPV and LNAV/VNAV minimums are terms used in aviation for instrument approach procedures. They provide more precise navigation and vertical guidance during landing phase of flight.
Step-by-step explanation:
LPV and LNAV/VNAV minimums are terms used in aviation, specifically in instrument approach procedures. LPV stands for Localizer Performance with Vertical guidance, and LNAV/VNAV stands for Lateral Navigation with Vertical guidance. These terms refer to the types of approaches that can be used by aircraft to navigate and land safely.
The reason we may not use LPV or LNAV/VNAV minimums could be due to several factors. One possible reason is that not all airports have the necessary equipment and infrastructure to support these approaches. Another reason could be that the aircraft being used may not have the required avionics or certifications to perform these approaches.
It's important to note that LPV and LNAV/VNAV approaches provide more precise navigation and vertical guidance compared to other types of approaches, which increases safety during the landing phase of flight.