What is this thing for?
The glideslope indicator. Set the runway ILS/GPS approach and if the arrow is down you have to go down, if the arrow is up, go up.
Ahhh perfect thanks very usefull
This is what it’s called :)
No problem :)
Yep, forgot the name :-)
how does that work?
You know how the HUD has the ILS/GPS Approaches for runways?
yeah…
how does it indicate to go down or up…
does it know what its doing…
It’s the localizer, it helps you line up to land directly on the threshold
still don’t get it, PM me details instead of writing it here?
thanks!
Although @Patrick_U has probably explained it to you it might as well be posted publicly for other confused users :)
In basic terms, the Glidescope gives descent guidance to land accurately. Once you are on the ILS you can view your position relative to the Glidescope by using that indicator you have circled. Like it’s been said above, if the indicator arrow is above the Center rectangle then you need to be higher, and lower if it’s below.

Don’t forget the PAPI :)
So that’s the glideslope…thanks @Patrick_U!
Hello fellow IF enthusiast!
There is a very detailed and excellent tutorial made by @Aernout how to fly a ILS approach (the thing that you seemed to have problems with)
Here is the link.
Simplified, its the glide slope thingy. The arrow points to where the glide slope is, whether you’re on, above or below the glide slope.
Localizer is lateral (i.e. to the left or right) while the glideslope is vertical (i.e. up or down) :)
