Jomsom is a very short runway in a valley between mountains. The mountains can cause massive windshear problems, there is no guarantee that the wind direction at any point on the runway is in way related to that at any other point. The Twotter is a fine aircraft for Nepal conditions but if a gust takes you off piste before you have enough weight on the wheels there is nothing you can do about it.
The press may quote Nepal's poor safety record but the facts are rather more complex, the roads into the mountains are far more dangerous and little more than goat tracks in places. Flying is by far the safest option.
Nepal has some of the most challenging flying conditions in the world, pilots who fly there have to be the best. RESPECT.