Not sure if in past notables but something to watch
Timeline of blackout off on
Sites in ordered date
https://www.miamiherald.com/news/nation-world/world/americas/venezuela/article228218719.html
https://www.bloomberg.com/news/articles/2019-03-22/u-s-sanctions-bandes-venezuela-s-national-development-bank
https://news.yahoo.com/maduro-accuses-us-financing-mercenary-plot-against-him-215421348.html