First Flight of MQ-9B Drone With P&W’s Powerful PT6 E-Series Engine The PT6 E-Series Engine is 33 per cent more powerful than the current engine on the MQ-9B Drone www.defensemirror.com/news/37320/F...#GeneralAtomics#GAASI#MQ9B#SkyGuardian#RemotelyPilotedAircraft#PT6Engine