![United Airlines 2012 Boeing 787-8 N45905 c/n 34825 RAT (Ram Air Turbine) San Francisco Airport 2020. | United airlines, Boeing 787, Boeing 787 8 United Airlines 2012 Boeing 787-8 N45905 c/n 34825 RAT (Ram Air Turbine) San Francisco Airport 2020. | United airlines, Boeing 787, Boeing 787 8](https://i.pinimg.com/originals/c4/91/52/c4915260722e889b42b7f9e13f074721.jpg)
United Airlines 2012 Boeing 787-8 N45905 c/n 34825 RAT (Ram Air Turbine) San Francisco Airport 2020. | United airlines, Boeing 787, Boeing 787 8
Alert Service Bulletin B787-81205-SB290015-00 HYDRAULIC POWER - Ram Air Turbine System - Ram Air Turbine Pump And Control Module
![aircraft design - What does the small fan do that is visible on Boeing 787 Dreamliners on landing? - Aviation Stack Exchange aircraft design - What does the small fan do that is visible on Boeing 787 Dreamliners on landing? - Aviation Stack Exchange](https://i.stack.imgur.com/xYQPP.jpg)
aircraft design - What does the small fan do that is visible on Boeing 787 Dreamliners on landing? - Aviation Stack Exchange
Aircraft Engineering | RAT (Ram Air Turbine) - an in-flight emergency source of electrical and hydraulic power, to operate the minimum flight controls and systems necessary ... | Facebook
Aviation Toulouse on Twitter: "Did you know that during each first flight the RAT (Ram Air Turbine or emergency power system) is tested ? RAT of #A350 msn 62 of yesterday. https://t.co/TQ7NfiTnWc" /
![Collins Aerospace Building Ram Air Turbine Wind Tunnel | Business Aviation News: Aviation International News Collins Aerospace Building Ram Air Turbine Wind Tunnel | Business Aviation News: Aviation International News](https://www.ainonline.com/sites/default/files/styles/ain30_fullwidth_large_2x/public/uploads/2021/05/boeing-787-rat_impact_1920x1080.jpeg?itok=jlJoeQte×tamp=1620830124)
Collins Aerospace Building Ram Air Turbine Wind Tunnel | Business Aviation News: Aviation International News
![Aviation Toulouse on Twitter: "Did you know that during each first flight the RAT (Ram Air Turbine or emergency power system) is tested ? RAT of #A350 msn 62 of yesterday. https://t.co/TQ7NfiTnWc" / Aviation Toulouse on Twitter: "Did you know that during each first flight the RAT (Ram Air Turbine or emergency power system) is tested ? RAT of #A350 msn 62 of yesterday. https://t.co/TQ7NfiTnWc" /](https://pbs.twimg.com/media/CxlbMSbVIAAP1uB.jpg)