Which requirement must be met for flight operations to or from a satellite airport within Class C airspace?

For flight operations to or from a satellite airport within Class C airspace, a fundamental requirement is for a pilot to establish and maintain communication with the ATC (Air Traffic Control) serving facility prior to entering that airspace. This communication is crucial because Class C airspace typically involves a higher level of air traffic and ATC services, necessitating that pilots remain in contact with ATC to ensure safety and efficient management of air traffic.

Maintaining communication helps ATC provide relevant information about the airspace, including traffic advisories, weather updates, and instructions that are essential for safe operations. The requirement emphasizes the importance of coordination between pilots and ATC to manage potentially congested airspace effectively.

While it is true that aircraft operating in Class C airspace need to have an ATC transponder and may need to comply with other regulations like flying under visual flight rules or establishing communication before takeoff, the primary requirement concerning entry into Class C airspace specifically highlights the necessity of maintaining active communication with ATC.