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Switzerland Confirms F-35A Delivery Scheduled for 2027 Despite Cost and Delay Concerns

Switzerland Confirms 2027 Delivery of F-35A Jets Amid Cost and Schedule Challenges
Switzerland’s defense procurement agency, Armasuisse, reaffirmed on September 6, 2025, that the country’s first F-35A fighter jets remain on track for delivery in mid-2027. Despite growing concerns over escalating costs and production delays, the initial aircraft will be manufactured at Lockheed Martin’s Fort Worth, Texas facility, with subsequent deliveries expected from the Cameri, Italy production line starting in mid-2028.
Program Status and Technical Challenges
The Swiss fleet will feature the latest “Block 4” configuration, which includes significant hardware and software enhancements. However, the program faces substantial hurdles, particularly with the Technology Refresh 3 (TR-3) upgrade—a $1.9 billion modernization critical to enabling Block 4 capabilities such as advanced sensors, new weapons integration, and enhanced electronic warfare systems. This upgrade is currently three years behind schedule.
The US Government Accountability Office (GAO) has highlighted the impact of these delays, noting that the Pentagon has accepted 174 F-35s in a non-combat-capable state due to TR-3 setbacks. In 2024, all 110 jets delivered were late, with an average delay of 238 days, a significant increase from the 61-day average in 2023. The GAO report published on September 3, 2025, further warns that the Block 4 program is at least five years behind schedule and $6 billion over budget, with some capabilities deferred to future software updates.
Despite these challenges, Armasuisse maintains that the Swiss aircraft will be delivered in an operational configuration. The current F135 engine will not require replacement in the near term, as engine core upgrades and improved cooling systems under the Power and Thermal Management Upgrade (PTMU) are not anticipated before the mid-2030s.
Political and Financial Implications
The Swiss Defense Program Review has underscored the cost overruns and delays, prompting the government to reassess its procurement strategy. Initially presented as a fixed-price contract, the F-35 acquisition has seen rising expenses, fueling speculation that Switzerland may reduce its order following unsuccessful price negotiations with the United States. Similar procurement difficulties have been reported in Spain, raising broader concerns about the F-35 program’s affordability and delivery timelines.
Political opposition within Switzerland has intensified, particularly after the imposition of a 39% US tariff on Swiss imports on August 1, 2025, by then-President Donald Trump. Left-wing lawmakers warn that the tariff could add up to $1.3 billion in additional costs. Conversely, government supporters argue that canceling the order would harm Swiss-US trade relations and further delay the modernization of the Swiss Air Force, which continues to operate aging F/A-18 Hornet fighters.
In early August, Swiss National Armaments Director Urs Loher visited Lockheed Martin’s Fort Worth facilities for technical discussions focused on offset obligations and project oversight. Armasuisse described the visit as routine, aimed at monitoring program progress and clarifying industrial cooperation under the F-35 agreement.
Swiss pilots and maintenance personnel are expected to begin training in the United States ahead of the planned 2027 delivery, as Switzerland advances its efforts to modernize its air force amid a complex and evolving procurement landscape.

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