AutoPower® Citation X

Cessna Citation X AutoPower®

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The Fourth Axis

On the most fundamental level, flying is about controlling three axis – pitch, yaw, and roll. However, in today’s dynamic cockpit environment, there is a fourth axis to control…speed.  The mission of AutoPower® – the automatic throttle system (ATS) from Safe Flight Instrument, LLC – is the precise management of speed through the control of thrust.  Safe Flight pioneered the development of automatic throttle technology which is now standard equipment on most large transport aircraft. Today, Safe Flight brings this level of cockpit sophistication to the Cessna Citation X.  AutoPower® delivers significant flight performance advantages resulting in reduced crew workload and increased situational awareness.

Accurate Speed Control

AutoPower® is an automatic throttle system designed to provide smooth thrust management with accurate engine target setting and airspeed control. AutoPower® manages thrust to N1 targets for specific FMC modes and speed control. It delivers improved climb performance, smooth and precise speed control, increased situational awareness, reduced crew workload, greater passenger comfort, quieter cabin environment, increased payload/range potential, and fuel savings.  AutoPower® manages engine thrust through the aircraft’s thrust levers, keeping the pilot in the loop. When the system changes thrust, the thrust levers move. Overriding the throttles never takes more force than moving the throttles when AutoPower® is not engaged.  Flight crew transition to AutoPower® operation is intuitive. The system automatically controls thrust and speed.

AutoPower® Advantages

  • Safe Flight’s automatic throttle systems are installed in over ten thousand commercial, corporate, and military aircraft
  • Automated thrust and speed control through dual servo thrust lever positioning for optimized profile performance, reduced crew workload, and increased passenger comfort
  • Integrated with the FMC to provide continuous aircraft exceedence protection, VNAV speed control, and automated thrust management
  • Precise, smooth N1 speed control regardless of maneuver, turbulence, or ATC-speed requests
  • AoA Referenced speed protection
  • Intuitive operation – fully integrated with existing avionics displays/controls
  • Cockpit uniformity with fleet

Perfecting Flight Performance

In the dynamic world of high-performance aviation, Safe Flight provides innovative leadership in aviation safety and performance. Over 60 years of system refinement is delivered with every Safe Flight AutoPower® system.


  • VNAV Speed Coupling
  • Required Time of Arrival Speed Management
  • Safety – AoA & N1 Flight Envelope Speed Limit Protection
  • Smooth, Pilot-in-the-Loop, Thrust Lever Control
  • Precise Speed Control
  • Improved Climb Performance
  • IAS/Mach/N1 Speed Management
  • Fuel Savings




  • Over 10,000 AutoPower® Systems Installed


  • AutoPower® Developed Over 60 Years


  • The Only Autothrottle System Available for Retrofit


  • Tailored Specifically by Flight Test


  • Operational through Landing Phases of Flight

Operational Benefits

Reduces Crew Workload

  • Automatically Provides Best Climb
  • Eliminates Manual Thrust Lever Adjustment to Compensate for Fuel Burn
  • Increased Passenger Comfort
  • Cockpit Uniformity with Fleet

Enhances Flight Safety

  • Enhances Situational Awareness
  • Provides Stabilized Approach and Landing
  • Incorporates AoA Referenced Minimum Speed Protection

Saves Fuel

  • Potential Fuel Savings
  • Extends Range
  • Increases Passenger/Payload


  • Asymptotic Approach into Speed Target


  • Extended Range / Increased Endurance


  • Control of Speed and Thrust

Additional AutoPower® Applications

To see more Safe Flight AutoPower® applications, follow the links below:

Bombardier Challenger 604/605

Bombardier Challenger 850/CRJ 200

Gulfstream G150

Gulfstream G200

Hawker 800 Series

USAF Boeing 707