Air Mountain Declares Bankruptcy, AOC Revoked by FOCA

The Court of Sion has declared Swiss charter airline Air Mountain bankrupt, a decision that has effectively ended the carrier's operations and triggered a permanent cancellation of over 30 weekly summer flights. Following the insolvency declaration on May 27, 2026, the Swiss Federal Office of Civil Aviation (FOCA) officially revoked the airline's Air Operator Certificate (AOC) on June 10, 2026. This regulatory action confirms that the carrier, which served as a niche link between regional Swiss airports and Mediterranean destinations, is no longer permitted to perform commercial air transport.

Financial Insolvency and Operational Collapse

The bankruptcy marks a significant contraction for the regional Valais aviation market. Prior to the cessation of services, Air Mountain operated a fleet of two eight-seat Beechcraft King Air B200 aircraft. These assets have since been grounded and seized by creditors. The airline’s financial trajectory was severely impacted by a three-month grounding of one of its aircraft during the previous year, which depleted cash reserves and hampered recovery efforts. Despite achieving a record 1.8 million CHF in revenue during the 2025 financial year and transporting approximately 3,200 passengers, the airline could not sustain its operations.

Air Mountain Director Raphaël Délèze expressed disappointment regarding the court's ruling, noting the timing was particularly detrimental as it coincided with the start of the high-demand summer season. The airline's business model relied on thin margins typical of small regional operators, making them highly susceptible to maintenance-related disruptions.

Stakeholder and Market Impact

The sudden closure has created immediate challenges for regional stakeholders. Sion Airport and La Chaux-de-Fonds Airport face a significant loss in passenger throughput and the associated revenue generated by the carrier's weekly schedule. Furthermore, regional travel agencies, such as VT Vacances, are currently navigating the logistical burden of rebooking or issuing refunds for hundreds of clients who held reservations for summer package holidays to destinations in Corsica and Sardinia. The airline's eight staff members are also facing immediate job losses as company accounts remain frozen.

Historical Context and Industry Trends

The collapse of Air Mountain aligns with a challenging historical trend for independent Swiss regional carriers. In August 2018, SkyWork Airlines ceased operations after failing to secure essential funding, and the startup Powdair collapsed in the winter of 2017 before it could launch its inaugural season. These events demonstrate the persistent difficulty of maintaining liquidity for niche, highly seasonal aviation operations in Switzerland. While the airline's financial structure failed, industry participants like VT Vacances have argued that consumer demand for direct, small-scale flights from regional Swiss hubs remains robust, suggesting that the issue lies in operational execution rather than a lack of market interest.

The Regulatory Mechanism of Insolvency

Under Swiss and European Union Aviation Safety Agency (EASA) regulations, an airline must maintain ongoing financial viability to hold an AOC. Insolvency proceedings automatically trigger the suspension or revocation of commercial flying privileges to ensure that safety and maintenance standards are not compromised by a lack of funding. The FOCA's decision to revoke the certificate is a standard protective measure to prevent potentially unsafe operations by a carrier in financial distress.

What Comes Next

Management at Air Mountain is currently evaluating the possibility of a legal appeal against the bankruptcy declaration from the Court of Sion. Any such appeal would be expected to occur throughout June 2026. However, given that the FOCA has already revoked the AOC and the fleet has been seized by creditors, the prospects for a resumption of services remain highly uncertain. For now, the focus for creditors and affected passengers remains on the liquidation process and the resolution of outstanding bookings.