[12] In August 2019, Simrik Airlines was forced to halt operations by the Civil Aviation Authority of Nepal, who found that the airline was using "substandard spare parts".

[13] One month later, the Civil Aviation Authority granted flight permission again.

[6] On 16 September 2021, operations of Guna Air began again with regular flights from Kathmandu to Pokhara and Bharatpur, discontinuing the brand Simrik Airlines.

[16] Simrik Airlines operated flights to the three destinations from Kathmandu Airport at the time of closure in 2021:[17] The airline also offered daily sightseeing mountain flights from Kathmandu.

[21] At the time of closure, Simrik Airlines operated the following aircraft: