FAA Global Navigation Satellite System (GNSS) Interference Resource Guide

Effectivity: All Challenger and Global aircraft

ATA 34-55

By: Stephane Beauchamp – Avionics, Technical Services, Global Series

Recently, the Federal Aviation Administration (FAA) Flight Technologies and Procedures Division (AFS-400) developed a resource guide (2026 - Version 1.0) to provide United States operators and pilots with the most current information about Global Positioning System (GPS)/ Global Navigation Satellite System (GNSS) jamming and/or spoofing.

This guide is not a formal FAA policy and nor regulatory. The information in this this guide is generic and may or may not apply to your aircraft. It may interest U.S. and non-U.S. operators. The guide is for informational purposes only and contains the FAA’s best recommendations for safety of flight when experiencing GNSS interference. This guide also offers safety suggestions to help mitigate the impacts of GNSS interference.

The FAA will announce publication of any new, formal FAA policy and/or regulatory change(s) regarding GNSS interference via an FAA Notice and use of the Federal Register. Updates to this guide will provide links for quick access to such new FAA policies and regulations on GNSS interference.

The FAA would also appreciate any feedback you may have on this guide and how it can be improved.

Click here for the GNSS Interference Resource Guide.

This complements the Bombardier Flight Operation Notifications (FON) found within the technical publication flight manuals section:

• Outage due to Signal Degradation or Jamming with Associated FDE, AVNC−030 for the Global and AVNC-005 for the Challenger series

• GNSS Spoofing Causing Incorrect FMS Position, AVNC-047 for the Global and AVNC-008 for the Challenger series

 On the maintenance side, the Advisory Wire is AW000-34-0027 Global Navigation Satellite System Spoofing.