It isn’t always easy to maintain a solid alternate airport within reach. Oh, sure, you can certainly pick someplace showing a forecast that meets the legal requirements, but is it really where you want to go?
The legalists among us tend to rely on regulatory standards. First, they’ll ask, based on the existing and forecast destination weather, “Do we have to have an alternate?” and then they’ll exclaim, “This one will do,” after finding an airport within range that’s legal to use as an alternate and is expected to have weather good enough to meet alternate-airport minimums. From a meet-the-rules standpoint, set forth in FAR 91.169, they feel as if they’re good to go.
But there are practical aspects to be considered, far beyond the plus-or-minus one hour, 2,000-foot ceiling…
