Into Uncontrolled Air

As instrument pilots on IFR clearances, the types and differences of the airspace we fly in dont seem to matter much. But it turns out that there are some nuances that do matter and can cause hassle, hazard or even a certificate action if we ignore them.

Editorial Staff

Wednesday, November 26, 2014 at 12:00 AM ET

Verified

Key Takeaways:

IFR pilots must understand the nuances of Class E and G airspace, as their complex definitions and potentially part-time nature can lead to operational and legal issues.
When operating in Class G airspace at the surface, especially at uncontrolled airports, IFR pilots are not separated from VFR traffic by ATC and must maintain visual lookout and use position reports.
A legality trap exists if Class E airspace extends to the surface and weather is below VFR minimums, requiring an IFR or Special VFR clearance on the ground for departure or when landing.
Pilots should not solely rely on ATC for separation, especially at the edges of controlled airspace or at airports with part-time towers, and must exercise vigilance for other traffic.

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As instrument pilots on IFR clearances, the types and differences of the airspace we fly in don’t seem to matter much. But it turns out that there are some nuances that do matter and can cause hassle, hazard or even a certificate action if we ignore them.

Unlike under VFR where it’s the airspace of higher control (Classes A through D) that are the issue, it’s classes E and G that can cause problems under IFR. These two airspaces are complex in definition and may exist only part-time. Both of those factors may matter at the beginning or end of your IFR flight.