https://www.scientificamerican.com/article/first-flight-of-nasas-mars-helicopter-ingenuity-is-delayed/ > We’ll have to wait a bit longer to see the first Mars helicopter lift off. > NASA had originally aimed to conduct the first Red Planet flight of its Ingenuity helicopter—the first-ever powered flight on a world beyond Earth—on Sunday (April 11). A high-speed rotor-spinning test on Friday (April 9) didn’t go as planned, however, pushing the debut back until Wednesday (April 14) at the earliest.