What must a pilot on a VFR flight operating within a Class C terminal control area obtain?

For a pilot operating on a VFR flight within a Class C terminal control area, obtaining clearance from the appropriate ATC unit is essential. Class C airspace is designed to provide structured traffic management for aircraft operating in and around busy terminal areas. This involves ATC providing separation between IFR (Instrument Flight Rules) and VFR flights, ensuring safety and efficiency in the vicinity of airports.

When a pilot requests clearance to enter Class C airspace, ATC will provide instructions and possibly traffic advisories. This communication is critical as it helps pilots navigate safely, especially in crowded skies where multiple aircraft may be operating simultaneously. The requirement for clearance reflects the need for organized traffic flow, which enhances safety for all users of the airspace.

Other options, such as obtaining VFR flight follow from other pilots or visual contact with the runway, do not address the necessary protocol established for interacting with air traffic control in Class C airspace. Clearance from local authorities is not required for routine flight operations within controlled airspace. Therefore, clearance from the appropriate ATC unit is the correct procedural step that pilots must take when entering Class C airspace.