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 Airborne 11.17.15: GE Advanced Turbo-Prop, Sandel Avilon, True Blue Power/Bell 505, Airborne 01.25.13: 787 Troubles Continue, Chambliss OK After Engine Failure, FIFI Returns!, Aero-TV: The Mosquito Helicopter - Not Much Bigger Than Some R/C Models!