View Full Version : Help with re-aligning an ILS in afcad.....
04-07-2005, 09:57 AM
Can someone explain how I go about re-aligning an ILS which is off by about 100 to 200 ft. right or left??
I am using a crossing runway afcad for simflyers KORD, and runway 9R/27L is way off. 9R I lock on the locolizer and wind up out to the right of the runway, and 27R I wind up off to the right as well, so it seems like it is slanted out somehow...
What steps do I take in acfcad to straighten this puppy up???
Thanks for any help..
04-08-2005, 06:27 AM
You have to decide what you want to use as the correct item to align the other things on. I recommend using AFCAD2 to look at the AFCAD file. Then go to airnav.com, and d/l the data for KORD. From this you will get the posiiton of the runway ends and ILS elements. AFCAD doesn't directly give you the runway ends; instead it gives you the center point. But you can use the cursor and a zoom to get a good enough reading. Compare these to the airnav data. In the best case the runway is properly located but the ILS is off -- then you can just move the ILS. If the runway is off, then you have to decide if it's worth trying to move the runway -- it can screw up your whole airport layout. If that's the case, you could just "lie" and move the ILS localizer into alignment. There is some additional positional data (for the US) available here:
it's not as easy to use as the airnav data and seems to agree with what is in airnav. Note that it's not a given that the LOC is right on the centerline, though it probably is if the ILS is Cat III certified.
04-08-2005, 10:54 AM
Thank you Scott,
I will first check the ILS alignment, then if that doesn't resolve it, I'll go with airnav.
Unless you want 100% accuracy, I suggest you use AFCARD and drag the localiser symbol to where you think it should be.
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