What is the difference between VASI lights and PAPI Lights?
Tuesday, July 22nd, 2008VASI - Visual Approach Slope Indicator
PAPI - Precision Approach Path Indicator
Well, first I’ll tell you what’s the same. They’re both lighting systems that provide vertical guidance for aircraft on final approach. They both provide a unique visual indication of ‘too high’, ‘too low’, or ‘on path’. The difference between a VASI and a PAPI is [...]