What does this sound mean on the plane? The passenger was crossing
One of the passengers was scared of the sound he heard during the flight. Although he can cause anxiety, he quickly learned that he had no reason to worry.
“Can anyone explain what this sound is?” – asked users of Tiktok Anil_lobo, a tourist from Dubai. In his video with a comedy exaggeration he played a reaction to a sound that sounds like some element on the plane began to break or move. Because the sound repeats, it can be associated with “barking” or the movement of loud wipers. There was no reason to worry.
Strange sound in aircraft
Such a sound can be heard in older models of Airbus aircraft (there are, among others, in the Wizz Air fleet) and if you flew them, you probably had the opportunity to wonder what is going on.
The hydraulic system of the machine is responsible for the sound, specifically the PTU (Power Transfer Unit) pump. It is a device that transfers hydraulic power from one of the aircraft hydraulic systems to another. In a nutshell, it is about balancing pressure between two systems. Because the system works in a vacuum, the sound is clear- informs Airnavradar.com.
Sound can often be heard on the ground when starting and turning off the engine. The location of the PTU at the wing means that people sitting in the middle of the plane can hear it more clearly.
New Airbus models in Poland
It is worth adding that “barking” mainly applies to older A320 and A330 models. It is unlikely that we will hear them in newer A320 and A31 Neo aircraft. The Points Guy portal explains that Airbus has developed a noise suppressing solution in its family of new generation narrow -hub aircraft.
Newer versions They are already responsible for 65 percent. Operations in Wizz Air aircraftand from December 2025 the second Airbus A321neo aircraft will be stationed in Wrocław.
Even more modern Airbus models will join the FLL LOT fleet in 2027-2031. The Polish carrier will order 40 Airbus A220 aircraft in versions -100 and -300. In addition, as part of the option and the right to purchase, it will gain the possibility of purchasing another 44 machines of this manufacturer.
