Executive Summary

Christian Hegner is ending his ten-year tenure as Director of the Federal Office of Civil Aviation (BAZL) at the end of March 2026. In an interview with SRF Tagesgespräch, he describes current challenges: The USA-Iran conflict classification by the Federal Government requires overflight reviews of military aircraft; approximately one quarter of requests are approved, the rest denied. Airlines are avoiding the Gulf region, leading to detours and bottlenecks. Additionally, the air navigation service provider Skyguide is struggling with IT problems and financing difficulties.

Persons

Topics

  • Swiss aviation authority
  • USA-Iran conflict and neutrality
  • Overflight fees and military clearances
  • Skyguide financing and IT modernization
  • Air traffic during COVID-19 and federal guarantees

Clarus Lead

Switzerland must operationally implement its neutrality position in the escalating USA-Iran conflict: BAZL reviews military overflight requests individually and denies approximately three-quarters—a balancing act between international law neutrality and diplomatic pressure from Washington. In parallel, IT outages at Skyguide reveal structural weaknesses in critical infrastructure that already led to airspace closures during Hegner's tenure. His successor inherits a system under financing pressure and modernization imperative.

Detailed Summary

Hegner explains the overflight regime pragmatically: Military aircraft require diplomatic authorization, commercial flights do not. Decisions are not made in isolation at BAZL but in consultation with the Foreign Ministry and Justice. Humanitarian and medical transports (medical evacuation of injured persons) are approved; transports with unknown contents or weapons connections are denied. Of approximately a dozen requests, about three were approved.

Regarding the US reaction, Hegner says: "It is not widely discussed." The pressure is high, but Switzerland cooperates with international partners. Airlines themselves are withdrawing from the Gulf region—not through BAZL prohibition, but through voluntary decision. This creates new problems: bottlenecks on alternative routes, more intense air traffic over India with possible detours back to Europe. BAZL sees no additional risk in this, as air navigation "manages these capacities well."

The Skyguide crisis: In February 2026, an IT update shut down Swiss airspace entirely. The federal audit office report certified BAZL's "higher standards and expertise," but criticized the spatial proximity between regulator and industry as well as insufficient safety culture in supervised companies. Hegner emphasizes that financing and operational continuity are ultimately federal matters—BAZL advises and oversees but does not make all decisions. Switzerland operates with small airspace, high complexity, and correspondingly high costs; the EU Commission and Eurocontrol also examine the business model.

Regarding the historical aircraft disaster of 2018 (20 deaths): Hegner calls it "Murphy"—a tragic case where a deficiency was known and was just being remedied through an inspection program. Consequences included stricter maintenance requirements and training for historical aircraft; maximum passenger numbers fell to 60, which endangers economic viability.

Key Statements

  • Operationalized Neutrality: Switzerland denies approximately 75% of military US overflight requests; humanitarian transports are approved.
  • Skyguide Under Pressure: IT deficits and financing gaps require modernization during ongoing operations—a challenge comparable to heart surgery.
  • Structural Weaknesses: Too-close regulator-industry proximity and insufficient safety culture were identified; reforms are initiated but not completed.

Critical Questions

  1. Data Quality: On what basis does BAZL assess "humanitarian" from "military" transports—what documentation or verification is binding?

  2. Conflict of Interest: How can BAZL as a supervisory authority remain independent of Skyguide when the same department (UVEK) finances and strategically directs both?

  3. IT Outage Causality: Was the February 2026 airspace outage a failure of service provider Skyguide or of the BAZL supervisory system that did not review updates in advance?

  4. Digitalization Feasibility: How is Skyguide to modernize its IT architecture during 24/7 operations without creating further outage risks?

  5. Neutrality vs. Pressure: How is it prevented that diplomatic pressure on overflight decisions (e.g., from the USA) undermines Swiss independence?

  6. Financing Model: Is Skyguide's fee model (as a self-financing enterprise) sustainable given the complexity of Swiss airspace, or does it require permanent federal subsidies?

  7. Safety Culture Implementation: What concrete metrics does BAZL measure to verify that safety culture improvements are actually effective?

  8. Successor Perspective: To what extent can the new director (Karin Zimmermann) accelerate Skyguide reforms if structural financing and governance problems remain unresolved?

Sources

Primary Source: [SRF Tagesgespräch with Karoline Arn: Christian Hegner, BAZL Director] – https://download-media.srf.ch/world/audio/Tagesgespraech_radio/2026/03/Tagesgespraech_radio_AUDI20260327_NR_0021_58605e7dba8e44db8cd174061288b072.mp3

Verification Status: ✓ 2026-03-28

This text was created with the support of an AI model. Editorial Responsibility: clarus.news | Fact-Check: 2026-03-28