What effect can aircraft pressurization systems have when not properly managed?

The correct answer highlights a significant risk associated with improper management of aircraft pressurization systems: the increased risk of Decompression Sickness (DCS).

When an aircraft ascends, especially to altitudes above 10,000 feet, the atmospheric pressure decreases. A properly functioning pressurization system helps maintain a safe and breathable environment for passengers and crew by ensuring that cabin pressure is regulated. If this system fails or is not managed effectively, the rapid change in pressure can lead to the formation of nitrogen bubbles in the body, particularly if a flight involves rapid ascent or descent. This condition is what is known as Decompression Sickness. The symptoms can range from joint pain to more severe neurological effects, thus making it a critical concern in aerospace physiology.

Understanding the impact of pressurization systems is essential for preventing DCS and ensuring a safe flight experience. This knowledge supports flight crews in managing altitude changes effectively and maintaining cabin pressure at levels that minimize physiological risks.