What is "Pressurization" in the context of aircraft operations?

In the context of aircraft operations, pressurization refers to the supply of air to maintain cabin pressure, which is essential for the safety and comfort of passengers and crew at high altitudes where the outside atmospheric pressure is significantly lower.

As the aircraft ascends, the outside air pressure decreases, which can make it difficult for humans to breathe and can lead to hypoxia, or oxygen deprivation. Therefore, the cabin is pressurized to simulate a lower altitude environment, allowing passengers and crew to breathe normally and feel comfortable during the flight. This pressurization system works by using engines or auxiliary power units to compress air and maintain a safe and livable atmosphere inside the cabin, counteracting the effects of high altitudes.

Understanding this concept is crucial for flight attendants, as it relates directly to their responsibilities in ensuring passenger safety and comfort throughout the flight.