Why Advisory Glideslope +V Can Get You in Trouble
On WAAS-equipped GPS units, many non-precision approaches (like LNAV or LP) will display LNAV+V or LP+V. That “+V” indicates advisory vertical guidance—an internally generated glidepath from the final approach fix (FAF) to the runway. It’s designed to help you fly a continuous descent final approach—a safer, more stabilized alternative to the old “dive and drive” technique. That’s the good news.

