The company has been an internal division of the manufacturer Iran Aircraft Manufacturing Industrial Company (HESA) and operated a fleet of 6 HESA-assembled Antonov An-140 turboprop aircraft.

Following the 10 August 2014 crash, the entire IrAn-140 fleet in Iran was grounded, pending the outcome of the investigation,[1] ultimately leading to the indefinite cessation of all Sepahan Airlines operations as it owned no other type of aircraft.

The Sepahan Airlines fleet consisted of the following aircraft:[2] On 10 August 2014, a HESA IrAn-140 operating flight SPN 5915 to Tabas crashed near Tehran Mehrabad International Airport, killing at least 39 passengers.

[3] The plane had taken off from the airport moments earlier at 9:45 hours local time (0515 UTC), before at least one of its engines failed.

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