Ram Air Turbine (RAT)


  • Handle manually deploys the Ram Air Turbine.

  • Deploys automatically whenever AC power sources are not powering the AC buses.

  • 8 seconds after deployment the RAT supplies power. Batteries power during the 8 seconds.

  • Requires maintenance to stow the RAT.

  • RAT power the AC Motor-driven Pump (ACMP 3A) for primary flight control tasks.

  • RAT provides a lower power output than the APU and IDGs.

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