Kathmandu, Feb 24: All 23 people on board a Nepali airliner were on Wednesday killed when it crashed in the mountains of western Nepal early in the morning. The Tara Air Viking 9N-AHH Twin Otter had taken off from the western Nepali tourist resort of Pokhara at 7.47 a.m. for Jomsom from where trekkers usually commence their hike. The passengers included two infants and two foreign tiols.