http://make-energy.net/uncategorized/pilots-what-are-the-regulations-governing-alternate-airports-for-ifr-flight Thu, 22 Jul 2010 18:32:28 +0000 hourly 1 http://wordpress.org/?v=3.2.1 http://make-energy.net/uncategorized/pilots-what-are-the-regulations-governing-alternate-airports-for-ifr-flight/comment-page-1#comment-2029 arbitrarily_pushing_buttoneer Sat, 17 Apr 2010 18:37:10 +0000 http://make-energy.net/uncategorized/pilots-what-are-the-regulations-governing-alternate-airports-for-ifr-flight#comment-2029 Great answer above, but I learned an easy "1,2,3" rule. Meaning that if 1 hour before or after your scheduled arrival time, if the ceiling is less than 2,000 feet and there is less than 3 statute miles visibility you need to file an alternate. Now if the alternate you file has a precision approach the weather there can be 600 ft ceiling and 2 miles vis. But if it's non-precision then the ceiling has to be 800 feet with 2 miles again (this is only true when published alternate minimums have not been prescribed for the airport). Also, I should note that this is for airplanes, not rotorcraft. Great answer above, but I learned an easy "1,2,3" rule. Meaning that if 1 hour before or after your scheduled arrival time, if the ceiling is less than 2,000 feet and there is less than 3 statute miles visibility you need to file an alternate. Now if the alternate you file has a precision approach the weather there can be 600 ft ceiling and 2 miles vis. But if it’s non-precision then the ceiling has to be 800 feet with 2 miles again (this is only true when published alternate minimums have not been prescribed for the airport). Also, I should note that this is for airplanes, not rotorcraft.

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