U.S. Sanctions Aim to ‘Shut Down’ Iran’s Airlines, but This Boeing Plane Is Still Flying

The United States has intensified economic pressure on Iran, announcing a series of sanctions that it says will effectively “shut down” the country’s commercial aviation sector. The measures, unveiled in late March, target a broad network of Iranian airlines, aircraft leasing firms and maintenance providers, and are intended to cripple the ability of Tehran’s carriers to operate internationally. Yet, despite the sweeping language of the sanctions, a Boeing 777‑300ER bearing the livery of Mahan Air continues to make regular flights from Tehran’s Imam Khomeini International Airport to destinations in Southeast Asia, raising questions about the scope of the U.S..

policy and the mechanisms that allow the aircraft to remain in service.The sanctions, announced by the Office of Foreign Assets Control (OFAC) under the Treasury Department, prohibit any U.S. person from providing goods, services or financing to Iranian airlines, and they also bar U.S.-registered aircraft from being leased or sold to Iranian carriers. In addition, the rules extend to companies that provide spare parts, technical support or insurance to Iranian aircraft, effectively cutting off many of the channels that keep a fleet operational..

In a statement, the administration claimed that the new restrictions would “shut down” Iran’s ability to operate commercial flights, a claim that has been echoed in diplomatic briefings and media coverage.Mahan Air, a private airline that has been under U.S. sanctions since 2011 for alleged links to Iran’s Revolutionary Guard, appears to have been spared by the latest round of measures. The airline’s 777‑300ER, registered as EP-IRG, continues to be listed on the airline’s official schedule, with flights to Kuala Lumpur, Bangkok and Manila operating on a weekly basis..

Observers note that the aircraft, which was delivered to the airline in 2014, was originally financed through a lease from a European lessor, not a U.S. entity, and that its engines and avionics were sourced from a mix of Western and Asian suppliers.The persistence of the aircraft in service hinges on a legal distinction that U.S. officials have not publicly addressed..

While OFAC’s sanctions ban the provision of U.S.-origin parts and services, they do not automatically seize or ground aircraft that were already in the fleet before the measures were enacted, provided that no new U.S. Aviation experts explain that many of the Boeing 777’s critical components—such as the Pratt & Whitney engines and the Boeing flight control systems—are indeed of U.S. origin, but the airline can legally continue to operate the plane if it refrains from acquiring new parts or maintenance contracts that involve U.S..

In practice, this means that the airline must rely on third‑party providers that can source non‑U.S. replacements, a process that is both costly and logistically complex.Iranian officials have defended the continued operation of the aircraft, arguing that the sanctions are “selective” and that they do not affect the airline’s right to maintain its existing fleet. In a press conference held in Tehran last week, the head of Iran’s Civil Aviation Organization, Mohammad Hadi Moghaddam, said that the country’s airlines have “adapted to the new environment” and are using “alternative supply chains” to keep their planes airworthy..

He added that the government is working with regional partners to ensure that essential spare parts are available, and that the sanctions have not “paralyzed” the industry as U.S. officials have suggested.The United States, for its part, has maintained that the sanctions are aimed at preventing Iran from using its aviation network to facilitate illicit activities, including the transport of weapons and the movement of sanctioned individuals. A senior administration official, speaking on condition of anonymity, said that the focus of the policy is on “cutting off the lifelines that enable the regime to sustain its regional ambitions.” The official acknowledged that some aircraft, such as the Mahan Air 777, remain in operation but emphasized that the broader objective is to erode the airline’s ability to expand routes, acquire new aircraft and maintain a modern fleet.International aviation bodies have taken a cautious stance..

The International Civil Aviation Organization (ICAO) has reiterated its commitment to maintaining the safety and regularity of air transport, while reminding member states that sanctions must not compromise the safety of passengers. In a recent briefing, an ICAO spokesperson noted that the organization does not have the authority to enforce sanctions, but it monitors compliance with safety standards. “If an aircraft is operating without the necessary airworthiness documentation or using unapproved parts, that would be a matter of concern for ICAO,” the spokesperson said.Airlines that have previously relied on Iran for transit or cargo services are beginning to adjust their schedules..

Several European carriers have announced the suspension of codeshare agreements with Iranian partners, citing the heightened risk of secondary sanctions. Meanwhile, Gulf carriers such as Emirates and Qatar Airways have increased their capacity on routes that previously saw Iranian traffic, positioning themselves as alternatives for passengers traveling between the Middle East and Southeast Asia.The economic impact on Iran’s aviation sector is already evident. Data from the Iran Aviation Association indicate a 30 percent decline in passenger numbers on domestic routes since the sanctions were announced, and revenue from international flights has fallen sharply..

Airlines have responded by scaling back flight frequencies, postponing aircraft deliveries and, in some cases, seeking to lease older, less technologically advanced planes that are not subject to U.S. This shift, however, brings its own challenges, including higher fuel consumption and reduced passenger comfort, which could further erode the competitiveness of Iranian carriers.Critics of the sanctions argue that the policy may have unintended humanitarian consequences. Aviation experts point out that commercial flights are a vital conduit for medical supplies, spare parts for essential equipment and the movement of Iranian citizens seeking education or medical treatment abroad..

Human rights organizations have warned that an outright shutdown of the airline network could exacerbate shortages of life‑saving medicines and hinder humanitarian assistance. Treasury has indicated that it will issue licenses for “humanitarian exemptions,” allowing limited flights that meet specific criteria, though the process for obtaining such licenses is described as “stringent and time‑consuming.”The case of the Boeing 777‑300ER also highlights the broader complexities of enforcing sanctions in a globalized supply chain. While the aircraft’s primary systems are American, many of its subsystems—such as certain avionics modules, cabin interiors and non‑critical components—are produced by companies in Europe, Japan and South Korea..

These firms are not directly bound by U.S. sanctions unless they use U.S. technology in their products..

As a result, a patchwork of compliance regimes emerges, forcing airlines like Mahan Air to navigate a labyrinth of licensing agreements, end‑.