The flight to Lukla itself is an adventure. The airport in Lukla, called Tenzing-Hillary Airport or simply Lukla Airport, is built upon treacherous terrain. The runaway is only 527 m/1,729 ft long and 30 m/ 98 ft. wide. On one side of the runaway is a cliff wall and on the other is a sheer drop into the valley below. It is built at an altitude of 2,846 m/ 9,337 ft also contributes to the danger of flying to it. At these altitudes, the air density is significantly lower than the operational limits of most aircraft. Adding to all these concerns is the erratic weather of the Himalayas. Unfavorable weather reduces visibility, and there is no radar here. Due to all these reasons, it is dubbed 'The World's Most Dangerous Airport. However, there is no reason to panic as the Civil Aviation Authority of Nepal has set a high standard for any pilot flying to or from the airport. To be eligible for a flight to this airport, a pilot must have completed 100 short take-off and landing flights, at least one year of experience flying in Nepal, and ten flights to Lukla with a certified instructor.