WHY PLANES MAKE GRINDING NOISES BEFORE TAKEOFF
0:07
YouTubeRusty Wheels
WHY PLANES MAKE GRINDING NOISES BEFORE TAKEOFF
Aviation engineers and aircraft mechanics explain that the rhythmic grinding or barking noise heard before takeoff—commonly on Airbus A320 family aircraft—is actually the sound of the Power Transfer Unit (PTU) balancing the plane's hydraulic pressure. An aircraft relies on multiple independent hydraulic systems to operate critical flight ...
533.2K views3 weeks ago
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