The crash of a DC-2, Kyeema, in the Dandenong Ranges near Melbourne, Australia, & the loss of all onboard - 4 crew & 14 passengers - led to a national outcry & high-level Inquiry that subsequently led to the development of one of the world's 1st Air Traffic Control systems that became a model for other countries. Hope you enjoy. Cheers.
https://youtu.be/MwXh2mq9OFs?si=XRtJw4nvdf4wesXS