Simviation Forums

I was wondering what type of glideslope indicator is present at the Ayers Rock airfield?

I haven't been able to find anything, but it consists of eight, horizontal white lights, which look a bit like this:

.. .. /  \ .. ..

The dots being lights, and the slashes the runway.

Between each gap between the four lights on either side, is another white light moving up and down.

So it seems that a low approach appears like this:

.. .. /  \ .. ..
 .           .
 .           .

The number of lights representing how low...

And the other way around when too high...

A lot of information, but does anybody know more about this system?

Almost looks like a carrier type system.  I'm not too familar with any system like that.

Now you mention it, it is actually quite reminiscent of 'the ball'.

EDIT:

I believe it's called a TVASIS... Anyone know anything else?

T.VASIS was introduced in Australia in 1972. It is not used anywhere else in the world. The rest of the world use PAPI and Australia are slowly following suit. The reason is one-TVASIS is very expensive...

You otherworlders don't recognise a premier system when you see.

Flying here in Australia into runways still equipped with TVASIS is in fact extremely accurate, just adjust your glideslope to keep the lights in line, with none going either forward, or back towards you (too low).

It is a little while since I did the theory but the number of lights up or down also tell the pilot how short or over the aiming point they are.  In a light plane, one dot above or below is not problem, but in a heavy jet the object is to land spot on.