EASA SIB 2022-02R4
Global Navigation Satellite System Outage and Alterations Leading to Communication / Navigation / Surveillance Degradation
Summary
The EASA Safety Information Bulletin 2022-02R4 is an updated advisory addressing the increase in Global Navigation Satellite System (GNSS) jamming and spoofing incidents affecting communication, navigation, and surveillance systems in aviation. It highlights the impact on flight operations, particularly in regions near conflict or geopolitical risk zones, and provides guidance for National Competent Authorities, air operators, ATM/ANS providers, and manufacturers. The bulletin does not target specific aircraft or engine models but focuses on GNSS-dependent systems broadly.
What Changed
This revision updates the previous EASA SIB 2022-02R3 by incorporating new recommendations on pilot-ATC phraseology, integration of Electronic Flight Bag technology, updated operational and training requirements, and air traffic control capacity management. It reflects the increased severity and sophistication of GNSS interference events and expands guidance on mitigating their effects.
Why It Matters
GNSS jamming and spoofing can cause significant degradation or loss of navigation and surveillance capabilities, leading to increased workload, potential flight deviations, and safety risks. Aviation professionals must understand these risks to maintain safe operations, ensure contingency procedures are in place, and manage air traffic effectively during GNSS disruptions. This bulletin helps stakeholders prepare for and respond to GNSS interference to uphold flight safety and operational continuity.
What To Do
Affected stakeholders should establish and maintain contingency procedures, ensure availability of non-GNSS navigation aids like ILS, DME, and VOR, and implement processes to monitor and report GNSS degradations. National Competent Authorities should coordinate with telecommunications and military entities to prevent unauthorized GNSS interference. Air traffic management providers must prepare for increased workload and maintain surveillance and communication capabilities during GNSS outages. No explicit compliance deadlines are stated.
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