What is one method pilots can use to remain within controlled airspace?

Pilots can effectively remain within controlled airspace by using charts and following Air Traffic Control (ATC) instructions. Charts provide critical information about airspace boundaries, including altitude limits, type of airspace, and any pertinent restrictions. They serve as a visual guide to help pilots navigate safely within the designated areas.

Additionally, ATC provides real-time guidance and directions to pilots, including clearance to enter specific controlled airspace and instructions for maintaining safe separation from other aircraft. By adhering to these instructions and referencing charts, pilots ensure they stay within the appropriate airspace limits, which is essential for maintaining safety in busy air traffic environments.

The other methods mentioned might not provide the comprehensive situational awareness and regulatory compliance needed for safe navigation within controlled airspace. For instance, relying solely on visual references can be insufficient, especially in complex airspace or poor visibility conditions, and onboard radar systems are not universally available in all aircraft. Communication with other pilots, while beneficial for situational awareness, does not guarantee that one will remain within controlled airspace without explicit guidance from ATC and appropriate navigation tools.