What you are describing is called PFD (Primary Flight Display). HSI is just a bottom part of it, basically combined heading indicator + CDI/VDI + (sometimes) mo

What you are describing is called PFD (Primary Flight Display). HSI is just a bottom part of it, basically combined heading indicator + CDI/VDI + (sometimes) moving map. But anyway, unless you are on instrument approach (or at least have it tuned in on your avionics), the HSI won't show you whether you are lined up with the runway or not.