Helicopter crashed shortly after takeoff from Lanyu killing six - put down to a combination of pilot error and wind shear - which is the gap between a wind gust and it not blowing suddenly

Says the wind gusted up to 74kph, which i can believe having been there - would need to be a highly skilled pilot to fly that route

http://www.taipeitimes.com/News/taiwan/archives/2019/09/25/2003722882