Evan's CFI Notebook ifr http://siu.evanyoungblood.com/ 2026-04-17T13:41:56+0000 Evan's CFI Notebook http://siu.evanyoungblood.com/ http://siu.evanyoungblood.com/lib/tpl/dokuwiki/images/favicon.ico text/html 2018-05-11T14:14:44+0000 Anonymous (anonymous@undisclosed.example.com) ifr:home http://siu.evanyoungblood.com/doku.php?id=ifr:home&rev=1526048084&do=diff Instrument Rating - Home Regulations GPS Database Requirements AIM 1-1-19b3(b) Database Currency (1) In many receivers, an up-datable database is used for navigation fixes, airports and instrument procedures. These databases must be maintained to the current update for IFR operations, but no such requirement exists for VFR use. (2) However,