videos in AudioSet
A list of about a million ten-second YouTube clips, each labelled with the sounds in it, that Google published in 2017. Labs use it to train and test general audio and music models.
Including John Uptigrove's autorotations on the Mosquito XE, The Mosquito XE at Benson Days, Wauchula Fl, Mosquito Helicopter at So. Jersey Regional Arprt. New Jersey