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11 Things You Probably Didn’t Know About Airplanes


In this presentation, there is the explanation about the new things and facts which we need to know while traveling within airplane. – PowerPoint PPT presentation

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Title: 11 Things You Probably Didn’t Know About Airplanes

11 Things You Probably Didnt Know About Airplanes
Presented by Lindsay Green
Table of Content
  • Introduction
  • Airplanes are designed to withstand lightning
  • There is no safest seat on the plane
  • Some airplanes have secret bedrooms for flight
  • The tires are designed not to pop on landing
  • Why cabin crew dims the light when a plane is
  • You dont need both engines to fly
  • Why there are ashtrays in the bathrooms 
  • What that tiny hole in the airplane window does
  • Why airplane food taste so bad
  • About those oxygen masks
  • Why planes leave trails in the sky
  • Contact Us

  • Planes have changed a lot since the days of the
    Wright Brothers (or, perhaps more
    accurately, Brazilian inventor Alberto Santos). 
  • Those first wood-and-cloth contraptions are an
    entirely different species than the sleek Boeing
    Dreamliners of today.
  • With the continual advancements in aerospace
    technology, it's hard to keep up with all the
    amazing things planes today are capable of doing
    (and withstanding).
  • Below, 11 things you didnt know about airplanes
    and air travel.

Airplanes are designed to withstand lightning
  • Planes are designed to be struck by lightningand
    they regularly are hit.
  • Its estimated lightning strikes each aircraft
    once a yearor once per every 1,000 hours of
    flight time.
  • Yet, lighting hasnt brought down a plane since
    1963, due to careful engineering that lets the
    electric charge of a lightning bolt run through
    the plane and out of it, typically without
    causing damage to the plane.

There is no safest seat on the plane
  • The FAA says there is no safest seat on the
    plane, though a TIME study of plane accidents
    found that the middle seats in the back of the
    plane had the lowest fatality rate in a crash. 
  • Their research revealed that, during plane
    crashes, the seats in the back third of the
    aircraft had a 32 percent fatality rate, compared
    with 39 percent in the middle third and 38
    percent in the front third.
  • However, there are so many variables at play that
    its impossible to know where to sit to survive a

Some airplanes have secret bedrooms for flight
  • On long-haul flights, cabin crew can work 16-hour
  • To help combat fatigue, some planes, like the
    Boeing 777 and 787 Dreamliners, are outfitted
    with tiny bedrooms where the flight crew can get
    a little shut-eye.
  • The bedrooms are typically accessed via a hidden
    staircase that leads up to a small, low-ceilinged
    room with 6 to 10 beds, a bathroom, and sometimes
    in-flight entertainment.

The tires are designed not to pop on landing
  • The tires on an airplane are designed to
    withstand incredible weight loads (38 tons!) and
    can hit the ground at 170 miles per hour more
    than 500 times before ever needing to get a
  •  Additionally, airplane tires are inflated to 200
    psi, which is about six times the pressure used
    in a car tire.
  • If an airplane does need new tires, ground crew
    simply jack up the plane like you would a car.

Why cabin crew dims the light when a plane is
  • When a plane lands at night, cabin crews will dim
    the interior lights.
  • Why? In the unlikely event that the plane landing
    goes badly and passengers need to evacuate, their
    eyes will already be adjusted to the darkness.
  • As pilot Chris Cooke explained to TL Imagine
    being in an unfamiliar bright room filled with
    obstacles when someone turns off the lights and
    asks you to exit quickly.
  • Similarly, flight attendants have passengers
    raise their window shades during landing, so they
    can see outside in an emergency and assess if one
    side of the plane is better for an evacuation.

You dont need both engines to fly
  • The idea of an engine giving out mid-flight
    sounds frightening, but every commercial airplane
    can safely fly with just one engine.
  •  Operating with half the engine power can make a
    plane less fuel-efficient and may reduce its
    range, but planes are designed and tested for
    such situations, as Popular Mechanics reported.
  • Any plane scheduled on a long-distance route,
    especially those that fly over oceans or through
    uninhabited areas like the Arctic, must be
    certified by the Federal Aviation Administration
    (FAA) for Extended-range Twin Operations (ETOPS),
    which is basically how long it can fly with one
  • The Boeing Dreamliner is certified for
    ETOPS-330, which means it can fly for 330 minutes
    (thats five and a half hours) with just one
  • In fact, most airplanes can fly for a
    surprisingly long distance with no engine at
    all, thanks to something called glide ratio.
  • Due to careful aeronautical engineering, a Boeing
    747 can glide for two miles for every 1,000 feet
    they are above the ground, which is usually more
    than enough time to get everyone safely to the

Why there are ashtrays in the bathrooms
  • The FAA banned smoking on planes years ago, but
    eagle-eyed passengers know that airplane
    lavatories still have ashtrays in them.
  •  As Business Insider reported, the reason is that
    airlinesand the people who design planesfigure
    that despite the no-smoking policy and myriad
    no-smoking signs prominently posted on the plane,
    at some point a smoker will decide to light up a
    cigarette on the plane.
  • The hope is that if someone violates the smoking
    policy, they will do so in the relatively
    confined space of the bathroom and dispose of the
    cigarette butt in a safe placethe ashtray, not a
    trash can where it could theoretically cause a
  • If you do smoke in the bathroom, expect a massive

What that tiny hole in the airplane window does
  • Its to regulate cabin pressure. 
  • Most airplane windows are made up of three panels
    of acrylic. 
  • The exterior window works as you would
    expectkeeping the elements out and maintaining
    cabin pressure.
  • In the unlikely event that something happens to
    the exterior pane, the second pane acts as a
    fail-safe option.
  • The tiny hole in the interior window is there to
    regulate air pressure so the middle pane remains
    intact and uncompromised until it is called into

Why airplane food taste so bad
  • Airplane food has a bad reputation, but the food
    itself isnt entirely to blame--the real fault
    lies with the plane. 
  • A 2015 Cornell University study, reported
    by Time, found that the environment inside an
    airplane actually alters the way food and drink
    tastes--sweet items tasted less sweet, while
    salty flavors were heightened.
  • The dry recycled air inside the plane cabin
    doesnt help either as low humidity can further
    dull taste and smell making everything in a plane
    seem bland.
  • About those oxygen masks
  • The safety instructions on most flight include
    how to use the oxygen masks that are deployed
    when the plane experiences a sudden loss in cabin
  • However, one that thing that the flight
    attendants dont tell you is that oxygen masks
    only have about 15-minutes worth of oxygen.
  • That sounds like a frighteningly short amount of
    time, but in reality that should be more than
  • Remember, oxygen masks drop when the airplane
    cabin loses pressure, which means the plane is
    also losing altitude.

Why planes leave trails in the sky
  • Those white lines that planes leave in the
    sky are simply trails of condensation, hence
    their technical name of contrails.
  • Plane engines release water vapor as part of the
    combustion process.
  • When that hot water vapor is pumped out of the
    exhaust and hits the cooler air of the upper
    atmosphere, it creates those puffy white lines in
    the sky.
  • Its basically the same reaction as when you see
    your breath when its cold outside.

Table of Content
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