Breakdown of the FAA Privacy ICAO Address Program
Analyzes the effectiveness of the FAA's Privacy ICAO Address program against crowdsourced ADS-B aircraft tracking networks.
Summary
The FAA Privacy ICAO Address Program
In January 2020, the Federal Aviation Administration introduced the Privacy ICAO Address (PIA) program to allow general aviation aircraft operators to mask their identity by using temporary randomized hex codes.
Bypassing Masked Identifiers with ADS-B Networks
Despite using randomized ICAO addresses, crowdsourced ADS-B receiver networks can correlate departure airports, flight trajectories, and secondary radio transponder emissions to deanonymize enrolled aircraft.
Quantifying Privacy Loss Through Simulation
A custom privacy simulator models aircraft movements over time, demonstrating that even with expanded operator enrollment, persistent sensor coverage allows adversaries to reconstruct flight histories.
Architectural Solutions for Aviation Privacy
Enhancing the PIA program requires technical modifications, including synchronized dynamic address rotation and cryptographic flight plan authentication to prevent multi-point sensor tracking.
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