The number of electric-propulsion aircraft projects continues to climb at a staggering rate. What is more, 2019 could be a year of many firsts. Bye Aerospace flew its Sun Flyer 2 prototype fitted with a Siemens motor Feb. 8, and MagniX has revealed its intent for November, just to name a few. For years, Robert Thomson and Nikhil Sachdeva of Roland Berger have been tracking and analyzing all the well-known and semi-secret projects – now counting 140-plus. In this week’s episode of Check 6, they talk with Senior Business Editor Michael Bruno about the big changes to come for the aerospace industry.