“The [[PAPI]]/[[VASI]] should be used in almost all cases. It's a great way to ensure you fly a standard, stable [[approach]] with plenty of runway in front of and after your touchdown.” ***Source***: https://www.boldmethod.com/learn-to-fly/maneuvers/should-you-use-the-papi-and-vasi-on-your-final-approach-or-touch-down-on-the-numbers/ from [[Bold Method]]