@nick.kida: As you're learning how to land, judging how high you need to be on a stabilized approach can be difficult to determine. These PAPI lights, or their variant VASI lights can be super helpful to objectively determine your glide slope to the runway. They're especially helpful at night when a "black hole illusion" comes into play too. Ever wonder how they send their signal? Like all my videos, this isn't instruction, it's meant to spark interest. #cfi #studentpilot #airplane #creatorsearchinsights