Tashi Air (Paro) is said to be considering acquiring A320 family aircraft to help with the launch of international operations. Given Bhutan's rugged mountainous terrain, analysts speculate that the order will most likely be for A319-100s given that they are the only Airbus aircraft capable of operating out of Paro which, with surrounding peaks as high as 18,000 ft (5,500 m), is considered one of the world's most challenging airports. Currently Tashi Air operates a single Pilatus PC 12 on an exclusively domestic network.