AGL before landing?

At what height AGL should i be when i am about 5NM from the runway? Or approximately when those red landing aid squares start? I am not using them and i try to follow the glide-slope but i never know at what height i should intercept the ILS.

Thank you! (:


Try altitudes between 2500-3000 when intercepting the end of the glide slope, apart from that it’s really up to you. Just descend or climb until you catch the glide slope.


Totally depends on the elevation of the airfield…but all I can say is try to find a constant rate of descent that you feel comfortable with that will guide you to the ground a couple of seconds after crossing the runway threshold :)


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Okay, that sounds logical, that is what i usually do but i thought maybe there is a cartain height that you should be at a certain distance from the runway.
Thank you for the replies.


Airport Elevation
Threshold Placement

Use the PAPI if you want to get a straight landing :)


My adivise echoes a few of the others,

The altitude varies on the airfield a good way to figure it out is using the glidescope, this will tell you exactly what altitude is ideal but obviously other factors play a part.

Your rate of descent or -Vs is the key to a steady descent, again have a play around and find what suits you best, I find -800vs works fine for me at around 180knts and then reduce that as I get closer.

Jump in an aircraft with an APPR feature and whilst it’s landing for you keep an eye on everything and then make your own decision :)

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Almost all glideslopes follow a 3 degree angle. This means that for every one mile you are from the threshold, you need 300 ft. For instance, at 5 miles, you should be at 1500 ft. 300x5=1500. You can see your distance using the DME in the HUD. You should intercept the localizer below the glideslope, so 2500 feet is a good altitude. After intercepting the localizer fly runway heading at a level altitude, until the glideslope comes alive and meets the center. At that point just fly the ILS. Hope that helped :)


Thank you.

But i find it really hard to see those lights, unless i fly at night time which i almost never do.
And i find it really hard to control and stabilise my rate of decent without AP😅

Can you explain me the 3.5 degrees thing? I have read about it many times and i don’t know how exactly to read those degrees on the HUD, therfore i don’t know my pitch degrees😅

I usually intercept the localizer at about 2500ft or whatever approach tells me to intercept at. Once I do intercept I set my vertical speed to about -800 and then I disconnect the AP at about 1000ft or whenever I’m comfortable. If everything goes right and you follow your instruments you should cross the threshold at 50ft.

On a standard 3.0 degree glidescope, you should be in the region of around 1200-1500 ft at 5NM out.

Also, you should cross the threshold at 50ft agl. :)

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