Under IFR, who must be informed immediately after GNSS failure?

Under IFR, who must be informed immediately after GNSS failure?

• A. ATC
• B. Pilot In Command
• C. Flight Dispatcher
• D. Airport Manager

Answer: (A)

Losing GNSS in IFR removes the primary, authoritative position reference for navigation and sequencing. Because Air Traffic Control is responsible for managing traffic and maintaining safe separation, they must be told right away so they can adjust routing, issue vectors, or switch you to non-GNSS navigation procedures (like VOR/DME or ILS) as needed. The goal is to keep the flight safe and properly integrated into the flow of traffic while you establish alternative navigation sources. The other roles aren’t the point of contact for real-time navigation interruptions, so immediate notice to ATC is the crucial step.

Losing GNSS in IFR removes the primary, authoritative position reference for navigation and sequencing. Because Air Traffic Control is responsible for managing traffic and maintaining safe separation, they must be told right away so they can adjust routing, issue vectors, or switch you to non-GNSS navigation procedures (like VOR/DME or ILS) as needed. The goal is to keep the flight safe and properly integrated into the flow of traffic while you establish alternative navigation sources. The other roles aren’t the point of contact for real-time navigation interruptions, so immediate notice to ATC is the crucial step.