Because of the extreme danger of flying in the mountains of Nepal, AirlineRatings.com does not safety rate any airlines or helicopter companies in the country.
The Lukla Airport has a track record for being the World's Most Dangerous Airport with a small runway (527 m) flanked by Mountains and treacherous terrain.
Sitting at an elevation of 2,845 metres, it is used by thousands of trekkers and climbers heading for the Everest region each year.
Before pilots can land there they must have completed at least 100 short-takeoff-and-landing flights (STOL) and have one year of STOL experience in Nepal and have completed ten missions into Lukla with a certified instructor pilot before they can land at the airport.
Air crashes are common in mostly mountainous Nepal, home to eight of the world's 14 highest mountain peaks, including Mount Everest.
Earlier, in February Seven people, including the country's tourism minister when a helicopter crashed in the hilly east.