Figure 23 includes the note "See NOTAMs/Directory for Class C eff hrs" near Savannah. How should a remote pilot use this information?

Why: Class C airspace at some airports is only in effect part-time; a chart note directing pilots to NOTAMs or the Chart Supplement means the remote pilot must check current hours before assuming Class C rules — including the § 107.41 ATC authorization requirement — apply.

• Assumes small UAS are exempt from checking airspace status, but § 107.41's ATC authorization requirement applies whenever the Class C designation is actually in effect, so the pilot cannot ignore the note.
• Misreads the note as purely historical; it's a live instruction to verify current effective hours, not a record of past status.