Electric aircraft propulsion systems have many configurations and are new from a regulatory and testing perspective. These propulsion systems involve several high efficiency motors which can create electrical stability and resonance issues, particularly during faults. To get these aircraft flying, engineers will need to characterize the component and system performance, evaluate the durability, and understand the different fault conditions of these aircraft. All three of these topics will drive the range, maintenance schedule, and airworthiness of a vehicle. This session will cover the measurement of many signals at a high level of accuracy to release flightworthy electric propulsion.