Originally Posted by deSitter
I assume that means "yes", and so how did these guys lose track of it, given that they knew this was a tricky approach?
Well actually, I was just trying to get a better idea of what you meant by "not needed" before answering.
I frequently fly into runways which have no VGSI (Visual Glide Slope Indicator, Could be a VASI, PAPI, PLASI or other) so I would consider a VGSI "not needed" if on a visual approach in good visual conditions in daylight.
That said, if it's there, I'm going to use it, even on a nice clear day, and in fact in the US, if flying a large or turbine aircraft, you are required by regulation to use it and stay on or above it.
Originally Posted by ironbut57
asquared....when tracking an electronic glideslope..
Sure, that could be considered as "not needed". Even in that case if the VGSI is visible I'd be referencing it.