Before you decide on an ILS runway, you must carefully study the frequency of instrument weather, wind directions and speeds. This involves choosing the right ceiling and visibility increments and allowing for such operational factors as cross-wind components.

If you don't make this study, your ILS may wind up in the wrong place, and you'll have done your airport out of many otherwise usable flying hours.

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Footnotes

* Reprinted from Aviation Age Magazine.—Ed.