Written question – Reliability concerns in the Galileo global navigation satellite system – E-002019/2025

Source: European Parliament

Question for written answer  E-002019/2025
to the Commission
Rule 144
Bart Groothuis (Renew)

Galileo, the EU’s global navigation satellite system, is central to the EU’s drive for technological sovereignty. However, recent observations by experts raise doubts about system performance and institutional transparency. On 7 May 2025, the EU Agency for the Space Programme (EUSPA) issued a notice[1] warning of potential service degradation ‘up to (…) disruption of service’ without a clear explanation. Moreover, an independent observer has reported that multiple satellites are broadcasting outdated data, potentially causing positioning errors affecting navigation and transport. At the same time, cryptographic authentication appears to be malfunctioning, weakening safeguards against spoofing and giving rise to concerns about secure use in critical services such as emergency response.

  • 1.Can the Commission confirm the nature and scope of the reported system issues, including outdated satellite data and authentication malfunctions, and clarify what steps have been taken to mitigate risks to users?
  • 2.What measures is the Commission taking to ensure the continuous accuracy and integrity of Galileo’s broadcast data, especially in the light of recent anomalies?
  • 3.What protocols are in place to ensure timely and transparent communication with users and researchers during service degradations, and does the Commission consider the recent EUSPA notice adequate in this regard?

Submitted: 21.5.2025

  • [1] https://www.gsc-europa.eu/notice-advisory-to-galileo-users-nagu-2025016.
Last updated: 28 May 2025