What happens during a "radar failure"?

• A. Air traffic controllers can continue as usual without any changes
• B. Aircraft automatically land themselves
• C. ATC must switch to backup procedures, including procedural separation
• D. All aircraft are grounded until the issue is resolved

Answer: (C)

During a radar failure, air traffic controllers shift to backup procedures to ensure the safety and efficiency of airspace management. Radar systems are vital for providing real-time information about aircraft positions and movements. When a failure occurs, it disrupts the controllers' ability to use this data for monitoring flights.

To continue operations safely, air traffic controllers implement procedural separation, which relies on established separation standards based on time or distance rather than real-time radar data. This approach involves clear communication with pilots regarding how they should navigate to maintain safe spacing from other aircraft.

The other options do not accurately reflect the protocols in place during a radar failure. For example, air traffic controllers cannot operate as usual since the primary radar information is lost. Aircraft do not have the capability to automatically land themselves, and grounding all aircraft is not a feasible or standard response; instead, the focus remains on continuing operations under modified procedures. Thus, switching to backup procedures, including procedural separation, is the essential and correct response during a radar failure.