On ERAM systems, how do Duplicate ICAO Address Alerts appear?

Duplicate ICAO Address Alerts in ERAM systems are specifically meant to identify situations where more than one aircraft is using the same 24-bit ICAO address. Since the 24-bit ICAO address is a unique identifier for aircraft on the radar system, any duplication can lead to significant operational complications, such as misidentification of targets or conflicting flight information. Therefore, the system alerts the controllers by clearly indicating "Duplicate 24-bit Address," which precisely conveys the nature of the issue.

This terminology is tailored to inform air traffic controllers that the problem lies with the identifier itself, focusing on the unique 24-bit representation that each aircraft should have. By specifying "24-bit Address," the system ensures that controllers understand the technical basis of the conflict, which is crucial for resolving it effectively. This designation helps maintain safety and efficiency in air traffic operations.