The unexpected effects of GPS spoofing on aviation safety

The report discusses the growing impact of GNSS/GPS jamming and spoofing on commercial aviation, detailing how position and time spoofing can poison inertial and multi‑mode receiver data, break time-sensitive cryptographic services (invalidating certificates and disrupting Wi‑Fi and CPDLC), and overload air traffic control as aircraft fall back to voice vectors. It highlights recovery challenges (e.g., MMR almanac resets, clock roll-forward issues necessitating reflashing), real-world disruptions (airport approach impacts and multi‑week engineering recovery), and urges hybrid navigation approaches and retention of ground-based navaids until spoofing-resilient solutions (including Galileo message authenticity) are widely deployed.