Figure 22 — Sectional Chart Excerpt · FAA-CT-8080-2H, p. 2-21
Figure 22 includes the note "See NOTAMs/Directory for Class E (sfc) eff hrs" near Coeur d'Alene. What does this note tell a remote pilot?
Why: A chart note like "See NOTAMs/Directory for Class E (sfc) eff hrs" means the surface-based Class E designation at that airport applies only during specific hours rather than 24 hours a day, so a pilot must check NOTAMs or the Chart Supplement for the current schedule.
Overstates the note as a permanent reclassification; it only flags that the Class E surface designation is part-time, not that it has been removed.
Assumes airspace classification only matters for IFR traffic, but Class E surface area status affects whether ATC authorization is required for any operation, including small UAS, under § 107.41.