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ILS problems

Pro Member First Officer
abmukh80 First Officer

Hi guys,

I've been observing this for quite some time in FSX. This is regarding the ILS feather on the map for some airports which do not take you into the runway but kind of sidesteps the runway. Others hold your aircraft laterally but the altitude goes for a toss when on final APP mode.

I've listed some airports. Try em out and please let me know. I may be committing some mistake myself.

The list is:

1. Reykjavik International, Iceland both runways 01/19 06/24 (While making ILS approach aircraft holds to the course of runway, but on final suddenly you start gaining altitude in ILS approach).

2. phuket International, Thailand runway 9/27 (Here the aircraft sidesteps the runway to land on the right of the runaway unless you deactivate APP and manually fly in)

3. Chhatrapati Shivaji International, Mumbai, India runaway 9/27 (Same problem with the ht. The aircraft dosen't descend with ILS and maintains same ht and over flies the airport unless you deciede to siengage AP.

4. Mataveri Intl, Chile runaway 10/28 (Same problem as phuket)

Guys let me know if I'm goin wrong anywhere.

Cheers

7 Responses

Pro Member First Officer
abmukh80 First Officer

Of course they do have. I mean if I'm not mistaken every ILS runaway has glidescope/loclizer. Correct me if I'm wrong

Pro Member First Officer
abmukh80 First Officer

how do you come to know that? Please help

Pro Member Trainee
Mark Hyder (markhyder) Trainee

is your ILS Fequ right in the radios?

Pro Member First Officer
faust1200 First Officer

Well I was curious so I looked up and flew the ILS 27 in Phuket. You are right there is something unusual about this approach but there is an explanation. If you check out this approach plate you can see that the localizer is specially marked and is offset 1 degree from the runway. The localizer course is 266 and the runway is 265 degrees. Additionally the decision altitude is 520-550 ft. (depending on aircraft category) which is higher than normal. (usually around 200 agl) So bear in mind when you fly this approach you are supposed to go visual and turn toward the runway at 550 ft. and if you can't see the runway you are supposed to go missed approach. If you go visual at 550 ft. it is easy enough to make the runway. Also I would question if there are actually those very tall trees THAT close to the runway in real life. Hope this helps.

You can see here I am at DA on glideslope coming into Phuket. (slightly left of course)

Pro Member First Officer
abmukh80 First Officer

Hi Faust,

If you could throw some light on this as well..... how do i come to know if the airport has a glidescope or i've to manually descend? Some people have posted replies here saying not all airports have glidescope but can have ILS approach!

Help me on that please!!

Pro Member First Officer
faust1200 First Officer

abmukh80 wrote:

Hi Faust,

If you could throw some light on this as well..... how do i come to know if the airport has a glidescope or i've to manually descend? Some people have posted replies here saying not all airports have glidescope but can have ILS approach!

Help me on that please!!

Any airport that has "ILS" will have a localizer and glideslope. If they only have a localizer it would be called a LOC or localizer approach. In real life you would have instrument approach plates that shows you each approach with all the information such as how far you can descend on a localizer only approach also known as MDA (minimum descent altitude) I actually have purchased approach plates for a few states to use with the sim. Without plates you are just really guessing on how to properly fly the approach. Usually ILS's are pretty similar which is why many people fly them in the sim but there are VOR, NDB, GPS and other types of approaches. Airnav.com is a decent place to find general info about what each airport offers. If you want to purchase approach plates, NOS plates are the cheapest, then there are Jeppesen, the ones I prefer which are more expensive. mypilotstore.com sells both types.

For an online solution I would recommend Jeppesen's Simchart. It's $41 or so but you get access to every approach plate with the ability to display it in FSX or print it out (probably the better option) There's no subscription so it should work "forever." I use it myself actually.

Also I know within the sim if you click into the map then click on your airport it will list the ILS approaches and their freq's but that's mostly it. Like I said if it lists an ILS freq. then there will be a localizer and glideslope.

So these are just some information sources that *I* know about that might help the simmer. I'm sure it's not a complete inventory. There may some addons that give you some good additional info or other sources as well. I have heard good things about aerosoft's "Flight Commander" but I am uncertain to what that exactly gives you. Good luck. Instrument stuff is the most fun, for me.

One last thing I thought of. If you get into the GPS and figure out how to use it well, it has a lot of airport info like approaches and freqs also. If you fly a GPS approach, again you would really need the approach plate to know how far you can descend. GPS approaches do not give vertical guidance.

Edit: I was looking over airnav.com and it looks like they give you access to NOS approach plates. I'd say that's a great free way to do it but they only supply U.S. plates.



Last edited by faust1200 on Wed Dec 26, 2007 12:51 pm, edited 4 times in total
Pro Member First Officer
abmukh80 First Officer

Thanks for that info faust

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