What controls the outflow valves in Normal Mode?

The correct response highlights the role of the Cabin Pressure Controller (CPC) in managing the outflow valves in Normal Mode. The CPC is an essential component of the aircraft's environmental control system, responsible for maintaining the cabin pressurization within specified limits during flight.

In Normal Mode, the CPC automatically adjusts the outflow valves based on the altitude and cabin pressure requirements. It continuously monitors various parameters, such as cabin altitude and rate of climb or descent, and adjusts the outflow valves accordingly to ensure a comfortable and safe environment for passengers and crew. The CPC is programmed to operate the outflow valves in a manner that prevents excessive pressure differentials, thus ensuring optimal safety and comfort.

Other options may reference components related to cabin pressurization, but they do not directly control the outflow valves in Normal Mode. The Emergency Outflow Valve, for instance, operates in emergencies where the CPC may not function properly; it serves a different purpose. The Manual Cabin Altitude Rate Knob allows for manual adjustments but does not provide automatic control as the CPC does, and Flight Level Law refers to systems governing aircraft performance at varying altitudes rather than direct control of pressurization systems. Therefore, the CPC's ability to autonomously manage the outflow