When should you be concerned if you hear an unusual sound during your multi-hour flight?
When you’re in an airplane more than 10,000 meters above the ground, any seemingly out-of-the-ordinary noises can make you nervous. But in most cases, you’re just being “soulless, ” because what you hear and see, doesn’t mean a plane crash is about to happen. Let’s also review the “harmless” noises on the plane.
When passengers board the plane or sit at the waiting door, the thumping sound is the sound of ground staff moving luggage into the storage compartment at the bottom of the plane.
Most planes will connect to the airport’s electrical grid when parked on the ground. When an aircraft leaves the door, the pilot will switch from the ground power system to the spontaneous power supply, which will lead to the situation of the lights in the cabin automatically turning on and off.
There are many different sounds in a flight.
After the plane leaves the ground, the pilot will control so that each wheel is pulled up and pressed against the fuselage. This causes two thud, thud sounds (corresponding to two wheels).
According to John Cox, a retired pilot, each airline will use the bell in different ways. A chime can mean a pilot warning flight attendants that the plane is going through turbulence or simply a flight attendant asking if the pilot wants coffee. Two conventional bells signal that the plane has reached an altitude of 3,000m. Three or more bells can warn of a more serious problem, like a sick passenger, or very bad weather outside…
As the plane begins to descend, the noise from the engine will gradually decrease. To slow the plane down and land safely, the plane’s aerodynamic control panels are activated – long panels on the wings that open up to block the wind. At this time, passengers in the cabin will hear rustling and slight shaking.
Once the plane hits the ground, a sound like the engine is accelerating again for take-off. The reason is that the pilot reverses the thrusters to slow down the plane. At this point, passengers will hear a rather loud sound from the engine, and feel like being pushed forward.