Whether you’re a frequent flyer or a nervous traveler, chances are, you’re familiar with that series of bizarre phenomena happening in the airplane before takeoff. Sometimes it’s a flicker of the lights, a series of engine noises, the air turning on and off… it’s enough to make you wonder what exactly is going on. Of course, it’s all very normal, and even ensures the safety of the aircraft. Here’s what’s actually going on during these series of seemingly random pre-flight happenings.
Rob Melnychuk / Getty Images Strange mechanical noises are all too common before an airplane takes off. And yet, you’ve probably wondered why they are necessary. As it turns out, these noises are all part of a safety checklist before the airplane takes off. In fact, being connected to a different source of power helps the airplane save fuel.
Swell Media / Getty Images Boarding the plane, you’re likely to hear a low humming noise, which is the auxiliary power unit. Before takeoff, the airplane’s main system takes over, which often causes a flicker of lights and shift in airflow.
fhm / Getty Images So the next time you’re waiting for take-off, rest assured that all of those strange noises all contribute to a smooth travel day.
What are some things you’ve always wondered about when traveling by airplane? We’d love to hear from you!
Rob Melnychuk / Getty Images
Strange mechanical noises are all too common before an airplane takes off. And yet, you’ve probably wondered why they are necessary. As it turns out, these noises are all part of a safety checklist before the airplane takes off. In fact, being connected to a different source of power helps the airplane save fuel.
Swell Media / Getty Images
Boarding the plane, you’re likely to hear a low humming noise, which is the auxiliary power unit. Before takeoff, the airplane’s main system takes over, which often causes a flicker of lights and shift in airflow.
fhm / Getty Images
So the next time you’re waiting for take-off, rest assured that all of those strange noises all contribute to a smooth travel day.
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