What happens to the aircraft’s atmosphere when the environmental control system malfunctions?

When the environmental control system malfunctions in an aircraft, the atmosphere inside the cockpit and cabin can become unsafe primarily due to the risk of overheating. The environmental control system is responsible for regulating temperature, pressure, and air quality. In the absence of a properly functioning system, the temperature can rise significantly, leading to discomfort and potential hazards for the crew and passengers.

The other outcomes, such as pressurization or automatic regulation, rely on the environmental control system to maintain safe and comfortable conditions. If the system fails, these essential functions do not occur effectively, leaving the aircraft at risk of overheating, which can affect both the performance of the aircraft and the safety of those onboard. Understanding the critical role of the environmental control system highlights the importance of system checks and maintenance to ensure operational safety.