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Boeing 747



The boeing 747 is spectacular. During the documentary he explains a large amount of information about the huge quantities of material and characteristics of this engineering work. It describes in particular the Boing 747-400, plane model called Victor X-ray. It is an airplane that has traveled more than 36 million miles, which means taking 1500 laps around the world during its 14 years of operation. His longest trip is 14 hours from Singapore with 299 passengers. These passengers consume up to a ton of food and drink during the flight

The hail, the fatigue of the materials, the collision with birds, are some of the causes that can cause wear or breakage of the components that make up the plane, A periodic inspections must be made to the aircraft to avoid aggravation. In addition, security systems such as chutes or black boxes are checked, since they are systems that, although they are not used, must be operational at all times.

Every 6 years, an exhaustive check called D check is carried out, and consists of carrying out up to 12,000 tasks on the plane, from disassembling the passengers' seats, to dismantling each of its four motors, which are fastened by 8 screws. 200 people, including engineers and mechanics, will perform 30,000 hours of work checking each part of the plane to verify that everything is correct and safe.

There are dimensions that allow us to understand their size, such as wings that measure as much as a football field or a landing gear weighs like double decker bus. And we can think that its price is as big as its size, 200 million pounds is what an airplane like this costs. Each engine can cost around 8 million dollars. In the second hand market we can find one for 1.2 million dollars. Is in the second-hand market we also find spare parts of these aerial giants, which come from other planes already retired. We can find parts such as urinals for 500 pounds, windshields for 30000 dollars or landing gear for 300,000 dollars.

Planes are incredible machines that nowadays the safety is the first.

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