Home / Photos / AutoPower: A First for Gulfstream G150 Photos AutoPower: A First for Gulfstream G150 By April 27, 2010 Full-time autothrottle system is the first available in a midsize business jet.G150 AutoPower system There are autothrottle engage/disengage buttons on each throttle so the G150 system operates the same as in the large-cabin Gulfstreams. The mode annunciator shows takeoff mode is engaged. Safe Flight engineers used protractor markings on the G150 throttle quadrant to precisely measure throttle lever angle during development. More From Photos A Fond Memory: Sun 'n Fun Aerospace Expo 2023 Gallery: The Evolution of Van's Aircraft Gallery: Tails on Display at Oshkosh Gallery: Wednesday at Oshkosh Photos: <i>FLYING</i> Honors Award Winners at Adventure Party First Look: Supernal's Air Taxi Passenger Cabin