Flap driveshafts and gearbox in action


A close up of a 737NG flap transmission with the movement of the torque tubes and gearboxes. The close up is of transmission #4 and the flap track of the left inboard flap with the flap rollers. In this video the flaps are selected from up to 40 units. For 737 technicians a daily common view, but for others a view they never see, or only hear a little when sitting in the cabin as a passenger.




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