No mention anywhere of Saab AB as the Type Certificate holder being onboard with this. This isn't just a case of slapping in a new power plant, but the airframe will require extensive modification to carry the batteries and associated management systems, indeed is the airframe capable of carrying all this? All the airframe load paths will change as the wings, I presume, will be empty if batteries are in the fuselage, so wing to fuselage structure, and undercarriage, will need significant changes as well. Hope the parties concerned have plenty experience around Supplementary Type Certificate management, or would this get to the point where the differences would need a new Type Certificate?