7 hidden features on airplanes you had no idea existed

Keep an eye out for these on your next flight.

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Hidden airplane features we had no idea about
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Hidden airplane features we had no idea about

The hidden handrail

We’re willing to bet you hate it when people aggressively grab your seat on the way to the bathroom. Once it’s your turn to make your way down the aisle, though, you realize you have no choice but to follow suit—or do you? Flight attendants don’t just touch the ceiling for fun when they walk; the bottom of the overhead compartment has a scalloped area that gives better grip when walking down a moving airplane, according to Condé Nast Traveler. Next time you need to get up, reach to the ceiling for balance. Your fellow passengers will thank you, especially if you follow these other 10 etiquette rules plane passengers should know, too.

Secret sleeping area

A long-haul flight is hard enough on passengers, but imagine being a pilot or flight attendant trying to make it through a 14-hour workday. It’s an exhausting job, so some planes, like Boeing 777 and 787 planes, have secret passageways that let staff can get some decent shut-eye, according to Insider. (Or maybe they aren’t sleeping—one survey found flight attendants have sex on planes.) A locked door near the front of the plane or a door posing as an overhead bin hides the entrance to a set of beds, kept private with thick curtains. Find out what flight attendants really notice about you.

The magic button for extra room

Did you manage to snag an aisle seat? Not only can you get up without crawling over people, but you can make your seat extra roomy at the push of a button, thanks to one of the coolest secret airplane features. Reach under the armrest closest to the aisle and feel around near the hinge. You should find a button, which will instantly let you swing the armrest up when you push it, according to Travel + Leisure. (Here are 14 more tricks to making a flight more comfortable for sleep.) Once it’s in line with your seat back, it won’t dig into your side anymore, and you can move your legs around without hitting anything. Whether you’re in the aisle or window seat, don’t make the mistake of doing these 18 things you should never do on an airplane.

Hooks on the wings

If you peek out the window to an Airbus plane’s wing, you can spot yellow bumps with holes in the middle on an otherwise smooth, white surface. (This is why most commercial airplanes are white.) If there’s an emergency water landing, the wings would be very slippery for passengers trying to get to the inflatable slide that would have deployed. To help travelers get off without falling, the easy-to-miss airplane features let cabin crew slip a rope through one hook and fasten it to the next, according to pilot “Captain” Joe. Passengers could hold on to the rope while on the plane to make it away from the plane safely. Find out how to survive a plane crash, according to science.

Triangle above windows 

Scan the wall of your plane; above four windows, you’ll see a black triangle. Each one lines up with the edge of the airplane’s wing, according to pilot “Captain” Joe. If a flight attendant needs to check the airplane’s slats or flaps—the moving parts on a wing—they’ll know exactly where to go for the best view. If you’re getting motion sick on a plane, you might want to see if you can move to a seat between the triangles. The wings are the plane’s center of gravity, so sitting between them would give you the smoothest ride. Learn about what the best seats on a plane for every need are.

Holes in the windows

Look closely at an airplane window and you’ll spot something weird: a little hole in the bottom. Take an even closer look and you’ll realize that unlike other windows, this one is made of three panes, and the hole is in the middle one. The quirk is there to protect against the pressure drop of flying high into the atmosphere, according to Slate. As a plane ascends, the pressure outside drops massively, but the cabin is designed to stay at a comfortable pressure. That leaves a big difference in pressure inside and outside of the plane. The outside window takes on most of that pressure, and the hole in the middle one helps balance the pressure difference. The inner window is just to protect the middle one. Here are 10 more airplane facts you’ve always wondered about.

Hidden handcuffs

If passengers are getting unruly, flight attendants have the right to restrain them. They might use typical cop-style cuffs, but most will use plastic restraints similar to zip ties, according to Express. For more airplane trivia, learn what those weird noises and phrases you hear mid-flight mean.

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