Hidden airplane features you didn't know existed

From secret crew sleeping quarters to tiny window holes, these hidden airplane features have important jobs that most passengers never notice

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Modern airplanes are packed with clever design details, but most travelers never notice them. Even if you fly several times a year, it's easy to miss the small features built into the cabin that actually improve safety, comfort and accessibility. Some are tucked out of sight, while others are right in front of you but rarely get a second glance.

Many of these features aren't there by accident. Airlines and aircraft manufacturers design them to help crews respond to emergencies, make flights more comfortable or meet strict safety requirements. From hidden buttons beneath your armrest to tiny holes in the window beside your seat, every detail serves a purpose.

A few of these features can even make your trip a little easier once you know they're there. Others are designed for situations passengers hope they'll never experience, such as emergency evacuations or medical incidents. Together, they offer a fascinating look at just how much thought goes into every commercial flight.

Reader's Digest rounded up some of the most surprising airplane features that often go unnoticed, even by frequent fliers. Here are five of the most interesting ones and the important roles they play every time a plane leaves the ground.

1. Hidden armrest buttons can make getting in and out of your seat much easier

Photo by Suhyeon Choi on Unsplash 

If you've ever struggled to squeeze into an aisle seat after the passenger in front of you reclined, there's a feature you may have overlooked. Some economy aisle seats include a small release button tucked beneath the armrest near its hinge. Pressing it allows........

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