What are those things on the aircraft wing?

What are those big panels on the wing?
In this video I will explain how flight and ground-spoilers work. I will give you some technical facts and also some handling tips together with some inflight footage.
The flight spoilers on the Boeing 737 are Hydraulically driven so we will briefly touch on that system as well.
Make sure you watch the whole video to the end in order to learn as much as possible about this crucial aircraft system.

This video is brought to you in cooperation with Simtech Aviation in Dublin. See link below.

https://www.simtech.ie/

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Видео What are those things on the aircraft wing? канала Mentour Pilot