A Russian aircraft maintenance company has filed a lawsuit against Cuba's state-owned airline over an unpaid multi-million-dollar debt, highlighting how relations between Moscow and Havana have shifted from the era of Soviet subsidies to one governed by strict commercial rules.
Ark Technic, based in Voronezh, initiated legal proceedings in the Moscow Arbitration Court against Cubana de Aviación and the Cuban Aviation Corporation (CACSA) for approximately 541 million rubles, equivalent to about $6.2 million, according to RIA Novosti.
The Russian firm is not only demanding payment of the owed amount but also requesting the seizure of assets belonging to both Cuban entities. The lawsuit was filed on August 3, with a preliminary hearing scheduled for October 28.
Ark Technic's Business and Revenue
Ark Technic specializes in "the repair and maintenance of aircraft, including spacecraft," as reported by BIR-Analytics, and recorded revenues exceeding 550 million rubles in 2025. The amount claimed from Cuba nearly equals a full year of the company's income.
Contractual Background and Cuban Non-Payment
The dispute stems from documented contractual agreements. CACSA confirmed on its official website that it had signed two agreements with ARK-Technic aimed at sustaining and restoring the airworthiness of Cubana de Aviación's fleet.
These contracts involved the supply of parts to Cuba, the establishment of a repair system for components, the presence of Russian technicians on the island, and technical inspections of aircraft to determine necessary updates. The lawsuit implies that the Cuban regime failed to honor the payment terms of these agreements.
Struggles of Cubana de Aviación
Cubana de Aviación is in dire straits: as of February 2026, the airline was operating with only four aircraft—a ATR 42-500, two ATR 72-200s, and an Ilyushin Il-96-300—a minimal fleet that reflects decades of decline and lack of investment.
Cuba's Economic Challenges
The situation is not isolated. In June 2025, the Cuban regime publicly admitted to accruing debts with numerous Russian companies, pledging to settle them "when the economic situation improves," while negotiating to reschedule its sovereign debt with Moscow—about $277.2 million in intergovernmental credits—from 2023-2027 to 2028-2040.
The bilateral relationship has undergone profound changes. Russia no longer provides subsidies; it offers credits, demands payments, and when Cuba defaults, its companies turn to the courts.
Russian Influence in Cuban Industries
Simultaneously, the Cuban regime has placed its strategic industries—energy, metallurgy, cement, nickel and cobalt mining, agro-food production—into Russian hands in exchange for financing and investments announced in April 2026 exceeding $1 billion.
Cuba offers land leases and resource exploitation contracts; Russia, capital and political support.
The Impact on Bilateral Air Travel
The bilateral air sector is facing its own collapse. In February 2026, Russian airlines Rossiya and Nordwind suspended regular flights to Cuba due to a severe kerosene shortage on the island, stranding approximately 4,300 Russian tourists who had to be repatriated on special flights.
Russian tourism, one of Cuba's main source markets, plummeted in the following months. By the end of August, the Russian Transport Minister stated that the resumption of flights depended on the normalization of fuel supplies, without providing a specific date.
Ark Technic's lawsuit comes precisely in this context: a Cuban state airline unable to meet financial obligations, a fleet in disrepair, and a relationship with Russia that no longer forgives debts but seeks resolution through arbitration courts.
Key Questions About the Legal Dispute and Its Implications
What is the main reason for Ark Technic's lawsuit against Cubana de Aviación?
Ark Technic is suing Cubana de Aviación for failing to pay a debt of approximately $6.2 million, stemming from agreements related to aircraft maintenance and parts supply.
How has the relationship between Russia and Cuba changed in recent years?
The relationship has shifted from one of Soviet-era subsidies to a more commercial partnership, where Russia provides credits and expects payments, and takes legal action when obligations are not met.
How does the current state of Cubana de Aviación reflect broader economic challenges in Cuba?
Cubana de Aviación's dwindling fleet and financial struggles mirror decades of economic decline and underinvestment in Cuba, exacerbated by international financial pressures and a lack of resources.