Which factor is not typically associated with cabin pressurization systems?

Cabin pressurization systems function by controlling the pressure within the aircraft cabin, ensuring that it remains at a safe and comfortable level for passengers and crew, especially at high altitudes. The main factors influencing these systems include the altitude at which the aircraft operates, the air density within the cabin, and the rate of airflow.

The amount of fuel used does not have a direct impact on cabin pressurization. While fuel consumption can affect the overall weight and performance of the aircraft, it doesn't play a role in maintaining or regulating cabin pressure. Instead, the systems primarily focus on managing air flow, density, and external altitude to ensure proper pressurization and comfort during flight.