Full Report
Image: Shutterstock What's new: Swiss officials have a program to disestablish terrestrial Instrument Landing Systems (ILS) at its airports in favor of GPS-based approaches. Pilots have objected, and they are being backed up by the European Union Aviation Safety Authority (EASA). While the pilots seem to have prevailed at one airport, ILS systems have already been removed from others and more are on the chopping block. Note - GPS is the only GNSS currently approved for use in commercial aircraft. The effort to approve and include Galileo has been on-going for years, but because of the lengthy, and some say ponderous, process, it hasn't happened yet. Why it's important: We would have expected government aviation authorities to be more knowledgeable and more focused on safety, efficiency, and effectiveness than is apparently the case here. Especially in Switzerland which has a reputation for good government and being willing to spend money […]
Analysis Summary
# Industry News: Swiss Aviation Strategy Stalls as GPS Vulnerabilities Clash with Cost-Cutting
## Summary
Swiss aviation officials are facing intense pushback from pilots and European regulators over a program to decommission terrestrial Instrument Landing Systems (ILS) in favor of GPS-only approaches. Despite escalating global GPS spoofing incidents, Switzerland has already removed ILS at several sites, though recent interventions by the European Union Aviation Safety Authority (EASA) have successfully suspended removal at Bern-Belp airport.
## Key Details
- **Date:** September 13–17, 2026
- **Companies Involved:** Swiss Federal Government, European Union Aviation Safety Authority (EASA), Swiss Pilots’ Union (Aeropers).
- **Category:** Infrastructure Policy / Regulatory Dispute
## The Story
For several years, Swiss authorities have pursued a cost-saving initiative to phase out ground-based ILS—the "gold standard" for precision landings—relying instead on Global Navigation Satellite Systems (GNSS). This move was predicated on the long-standing promise that satellite navigation would eventually render expensive terrestrial infrastructure obsolete.
However, this transition coincides with a dramatic rise in GPS spoofing and jamming across Europe and the Middle East. While GPS is currently the only GNSS approved for commercial use in Switzerland (due to delays in Galileo integration), it is increasingly unreliable. Pilots report daily interference where "satellites lie" to cockpit systems. EASA has stepped in to back pilot concerns, advising national authorities to maintain ILS as a critical fail-safe for emergencies, leading to a recent suspension of the decommissioning plan at Bern-Belp.
## Business Impact
### For the Companies Involved
- **Swiss Aviation Authorities:** Facing a strategic "sunk cost" dilemma. Having already removed ILS at some airports, they may now face significant capital expenditures to reinstall or modernize terrestrial systems they intended to abandon.
### For Competitors
- **Avionics Manufacturers:** The delay in Galileo approval highlights a bottleneck in the market. Companies providing Multi-Constellation/Multi-Frequency (MCMF) receivers may see a surge in demand as airlines seek more resilient PNT (Positioning, Navigation, and Timing) solutions.
### For Customers
- **Airlines & Passengers:** Increased risk of flight cancellations or diversions in Swiss airspace if GNSS interference occurs at airports lacking ILS backups. This could lead to higher operational costs for carriers.
### For the Market
- **PNT Infrastructure:** This sets a precedent that GNSS is not yet a "single point of success." The market for ground-based augmentation and backup systems (like eLoran or modernized ILS) is likely to see a resurgence in interest and funding.
## Technical Implications
The primary technical issue is the vulnerability of "open source" low-power satellite signals. Unlike ILS, which is a localized, high-power ground beam, GPS signals are easily drowned out by cheap jammers or manipulated by sophisticated spoofers. The "ponderous" approval process for Galileo further complicates the technical landscape, leaving pilots reliant on a single, vulnerable constellation.
## Strategic Analysis
- **Market Positioning:** Switzerland, usually a leader in infrastructure stability, is currently positioned as a cautionary tale of "budget-first" technology adoption.
- **Competitive Advantage:** Airports that retain a "hybrid" navigation environment (GNSS + Terrestrial) will have a distinct safety and reliability advantage during periods of regional electronic warfare or solar activity.
- **Challenges:** The primary challenge is the "information gap" between budget-focused bureaucrats and operational crews who deal with the reality of electronic interference.
## Industry Reactions
- **EASA:** Has formally advised keeping ILS available for emergencies, signaling a lack of confidence in GNSS-only environments.
- **Pilots’ Unions:** Highly critical, arguing that removing ground-based backups during a period of peak GPS interference is negligent.
- **Analysts:** Some suggest this may be exacerbated by misinformation or a lack of understanding regarding the ease with which GNSS can be compromised.
## Future Outlook
- **Predictions:** Expect a broader European mandate requiring terrestrial backups for all major international airports, effectively ending the "GNSS-only" dream for the current decade.
- **What to watch for:** The eventual certification of Galileo for commercial aviation, which may provide some redundancy, though it remains vulnerable to the same physics of jamming as GPS.
## For Security Professionals
This news highlights a critical concept in cybersecurity: **Resilient PNT.**
- **Dependency Risk:** Practitioners should audit their own organizations for "silent dependencies" on GPS (e.g., time-stamping for financial transactions, data logs, or physical security systems).
- **Physical/Cyber Convergence:** The spoofing of GPS is a reminder that the integrity of data (location/time) is just as important as its availability. Security teams should advocate for multi-source timing and navigation inputs to prevent single-point failures.