Both the pilot and passenger died on 31 May in an accident involving a prototype of eFusion , an aerobatic electric plane created by Siemens and aerospace engineers . Being one of few larger electric aircraft projects , the aircraft was equipped with a 260 kW engine . It is not yet known what caused it to crash and an investigation is being conducted . ##hium - ion batteries have been found to be prone to exploding .
Both the pilot and passenger died on 31 May in an accident involving a prototype of eFusion, an aerobatic electric plane created by Siemens and Magnus Aviation. Being one of few larger electric aircraft projects, the model was equipped with a 260 kW motor. It is not yet known what caused it to crash and an investigation is being conducted. Lithium-ion batteries have been shown to be prone to exploding.