Uncontrolled IFR

Operations take place daily in uncontrolled airspace. Paynesville, MN (KPEX) is a typical non-towered airport with the familiar vignette depicting Class E beginning at 700 feet AGL. Departing Paynesville, any time we spend in the clouds below the Class E floor is IFR in uncontrolled airspace. Of course, as you should recall, lacking that magenta vignette, the 700-foot limit becomes 1200 feet. Instrument approaches begin with an ATC clearance in controlled airspace, but often take us into uncontrolled Class G airspace. At Paynesville, the RNAV (GPS) RWY 11 approach LPV mins take us to 200 feet AGL, 500 feet into the surface Class G airspace.

Key Takeaways:

• While theoretically permissible under FAA regulations, conducting "pure" IFR flight in uncontrolled (Class G) airspace in the U.S. without an ATC clearance or flight plan is practically impossible to do safely and legally.
• This impracticality stems from the limited vertical extent of Class G airspace in the U.S. (rarely above 1200 ft AGL), which often conflicts with IFR minimum altitude requirements, and NTSB legal precedents that classify such operations as "careless and reckless" due to unmitigated collision risks.
• Most IFR flight in U.S. Class G airspace occurs only as short, incidental segments of flights primarily conducted under an ATC clearance in controlled airspace (e.g., during initial climb from non-towered airports or on the final approach segment).

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