When ascending into higher elevations, air pressure gradually lessens and breathing can become more labored. At high enough altitudes, conditions of oxygen, pressure, and temperature can even become dangerous to humans. Due to this, aircraft have been specifically engineered to maintain a comfortably pressured environment for passengers during flight. This means that every component must be designed to withstand the difference of pressure on the inside and outside of the fuselage. While windows and structures remain permanently closed and/or sealed, the main doors are openable. Luckily for any worried passenger, their design specifically prevents any possible openings or malfunction during flight.

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Lights are probably not the first thing that comes to mind when you think about the most important components of a functional aircraft. However, the lights are all over an aircraft, and each one of them serves an important purpose. Just as important as the lights themselves is their installation. Aircraft engineers must be up to the task of installing functional lights that don’t interfere with passenger comfort, aircraft utility, or safety. 

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When talking about aviation, it can be easy to focus on the intricate, ‘flashy’ parts of an aircraft like the engines, controls, avionics. Etc. These are all undeniably vital for a functioning aircraft, but equally vital is the aircraft’s hardware, the humble nuts, bolts, screws, and rivets that hold the airframe together. There’s no point in designing and manufacturing the perfect engine for an aircraft, after all, uf substandard bolts will cause it to tear itself off of the fuselage, after all! According to the Airframe and Powerplant Mechanics General Handbook, aircraft hardware is “the term used to describe the various types of fasteners and miscellaneous small items used in the manufacture and repair of aircraft.”

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Lighting is a critical part of ensuring an aircraft’s safety in low-visibility conditions, such as night or inclement weather. Numerous regulations placed by international conventions government agencies like the Federal Aviation Authority and the European Aviation Safety Agency dictate their placement, numbers, and brightness.

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