Days after five Mexican tourists and a바카라 웹사이트Nepali pilot were killed in a helicopter crash바카라 웹사이트while returning from viewing Himalayan peaks, including Mount Everest,바카라 웹사이트Nepal's aviation regulator has banned helicopters from conducting "non-essential" flights, including those for sight-seeing.바카라 웹사이트Since 2000, there have been 18 air crashes in the country, resulting in the deaths of 350 people before the recent crash.