![boeing 737 - What is the strange object on 737-800 exterior, on the aft right side? - Aviation Stack Exchange boeing 737 - What is the strange object on 737-800 exterior, on the aft right side? - Aviation Stack Exchange](https://i.stack.imgur.com/cYwIq.jpg)
boeing 737 - What is the strange object on 737-800 exterior, on the aft right side? - Aviation Stack Exchange
![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/736x/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
![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/Cxk4zb4XgAABpBT.jpg)
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" /
![aircraft systems - Is there a maximum airspeed to deploy a ram air turbine? - Aviation Stack Exchange aircraft systems - Is there a maximum airspeed to deploy a ram air turbine? - Aviation Stack Exchange](https://i.stack.imgur.com/tGcsX.jpg)